23313257537 has 2 divisors, whose sum is σ = 23313257538. Its totient is φ = 23313257536.

The previous prime is 23313257521. The next prime is 23313257549. The reversal of 23313257537 is 73575231332.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18883157056 + 4430100481 = 137416^2 + 66559^2 .

It is a cyclic number.

It is not a de Polignac number, because 23313257537 - 2⁴ = 23313257521 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23313257494 and 23313257503.

It is not a weakly prime, because it can be changed into another prime (23313257567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11656628768 + 11656628769.

It is an arithmetic number, because the mean of its divisors is an integer number (11656628769).

Almost surely, 2^23313257537 is an apocalyptic number.

It is an amenable number.

23313257537 is a deficient number, since it is larger than the sum of its proper divisors (1).

23313257537 is an equidigital number, since it uses as much as digits as its factorization.

23313257537 is an evil number, because the sum of its binary digits is even.

The product of its digits is 396900, while the sum is 41.

Adding to 23313257537 its reverse (73575231332), we get a palindrome (96888488869).

The spelling of 23313257537 in words is "twenty-three billion, three hundred thirteen million, two hundred fifty-seven thousand, five hundred thirty-seven".