1023497357 has 4 divisors (see below), whose sum is σ = 1027744476. Its totient is φ = 1019250240.

The previous prime is 1023497351. The next prime is 1023497369. The reversal of 1023497357 is 7537943201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7537943201 = 101 ⋅74633101.

It can be written as a sum of positive squares in 2 ways, for example, as 932752681 + 90744676 = 30541^2 + 9526^2 .

It is a cyclic number.

It is not a de Polignac number, because 1023497357 - 2⁴ = 1023497341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1023497351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2123198 + ... + 2123679.

It is an arithmetic number, because the mean of its divisors is an integer number (256936119).

Almost surely, 2^1023497357 is an apocalyptic number.

It is an amenable number.

1023497357 is a deficient number, since it is larger than the sum of its proper divisors (4247119).

1023497357 is an equidigital number, since it uses as much as digits as its factorization.

1023497357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4247118.

The product of its (nonzero) digits is 158760, while the sum is 41.

The square root of 1023497357 is about 31992.1452391052. The cubic root of 1023497357 is about 1007.7718935242.

The spelling of 1023497357 in words is "one billion, twenty-three million, four hundred ninety-seven thousand, three hundred fifty-seven".