231353231020357 has 2 divisors, whose sum is σ = 231353231020358. Its totient is φ = 231353231020356.

The previous prime is 231353231020283. The next prime is 231353231020369. The reversal of 231353231020357 is 753020132353132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 206764584834721 + 24588646185636 = 14379311^2 + 4958694^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231353231020357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231353231020657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115676615510178 + 115676615510179.

It is an arithmetic number, because the mean of its divisors is an integer number (115676615510179).

Almost surely, 2^{231353231020357} is an apocalyptic number.

It is an amenable number.

231353231020357 is a deficient number, since it is larger than the sum of its proper divisors (1).

231353231020357 is an equidigital number, since it uses as much as digits as its factorization.

231353231020357 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 340200, while the sum is 40.

Adding to 231353231020357 its reverse (753020132353132), we get a palindrome (984373363373489).

The spelling of 231353231020357 in words is "two hundred thirty-one trillion, three hundred fifty-three billion, two hundred thirty-one million, twenty thousand, three hundred fifty-seven".