13031021023357 has 2 divisors, whose sum is σ = 13031021023358. Its totient is φ = 13031021023356.

The previous prime is 13031021023303. The next prime is 13031021023409. The reversal of 13031021023357 is 75332012013031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10326331598521 + 2704689424836 = 3213461^2 + 1644594^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13031021023357 is a prime.

It is a super-2 number, since 2×13031021023357² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13031021027357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6515510511678 + 6515510511679.

It is an arithmetic number, because the mean of its divisors is an integer number (6515510511679).

Almost surely, 2^{13031021023357} is an apocalyptic number.

It is an amenable number.

13031021023357 is a deficient number, since it is larger than the sum of its proper divisors (1).

13031021023357 is an equidigital number, since it uses as much as digits as its factorization.

13031021023357 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11340, while the sum is 31.

Adding to 13031021023357 its reverse (75332012013031), we get a palindrome (88363033036388).

The spelling of 13031021023357 in words is "thirteen trillion, thirty-one billion, twenty-one million, twenty-three thousand, three hundred fifty-seven".