231545505503353 has 2 divisors, whose sum is σ = 231545505503354. Its totient is φ = 231545505503352.

The previous prime is 231545505503239. The next prime is 231545505503441. The reversal of 231545505503353 is 353305505545132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 116339694343744 + 115205811159609 = 10786088^2 + 10733397^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231545505503353 is a prime.

It is a super-2 number, since 2×231545505503353² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 231545505503297 and 231545505503306.

It is not a weakly prime, because it can be changed into another prime (231545505504353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115772752751676 + 115772752751677.

It is an arithmetic number, because the mean of its divisors is an integer number (115772752751677).

Almost surely, 2^{231545505503353} is an apocalyptic number.

It is an amenable number.

231545505503353 is a deficient number, since it is larger than the sum of its proper divisors (1).

231545505503353 is an equidigital number, since it uses as much as digits as its factorization.

231545505503353 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10125000, while the sum is 49.

The spelling of 231545505503353 in words is "two hundred thirty-one trillion, five hundred forty-five billion, five hundred five million, five hundred three thousand, three hundred fifty-three".