1023143550 has 96 divisors (see below), whose sum is σ = 2981059200. Its totient is φ = 228950400.

The previous prime is 1023143549. The next prime is 1023143551. The reversal of 1023143550 is 553413201.

It is an interprime number because it is at equal distance from previous prime (1023143549) and next prime (1023143551).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1023143550.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1023143551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2400 + ... + 45299.

It is an arithmetic number, because the mean of its divisors is an integer number (31052700).

Almost surely, 2^1023143550 is an apocalyptic number.

1023143550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1023143550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1490529600).

1023143550 is an abundant number, since it is smaller than the sum of its proper divisors (1957915650).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1023143550 is a wasteful number, since it uses less digits than its factorization.

1023143550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47738 (or 47733 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 1023143550 is about 31986.6151694736. The cubic root of 1023143550 is about 1007.6557564897.

Adding to 1023143550 its reverse (553413201), we get a palindrome (1576556751).

The spelling of 1023143550 in words is "one billion, twenty-three million, one hundred forty-three thousand, five hundred fifty".