1020233231 has 4 divisors (see below), whose sum is σ = 1030138512. Its totient is φ = 1010327952.

The previous prime is 1020233191. The next prime is 1020233237. The reversal of 1020233231 is 1323320201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1020233231 is a prime.

It is a super-2 number, since 2×1020233231² = 2081751691273398722, which contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020233237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4952486 + ... + 4952691.

It is an arithmetic number, because the mean of its divisors is an integer number (257534628).

Almost surely, 2^1020233231 is an apocalyptic number.

1020233231 is a deficient number, since it is larger than the sum of its proper divisors (9905281).

1020233231 is an equidigital number, since it uses as much as digits as its factorization.

1020233231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9905280.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 1020233231 is about 31941.0900095786. The cubic root of 1020233231 is about 1006.6994277722.

Adding to 1020233231 its reverse (1323320201), we get a palindrome (2343553432).

The spelling of 1020233231 in words is "one billion, twenty million, two hundred thirty-three thousand, two hundred thirty-one".