231546315641 has 2 divisors, whose sum is σ = 231546315642. Its totient is φ = 231546315640.

The previous prime is 231546315593. The next prime is 231546315673. The reversal of 231546315641 is 146513645132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 204149445241 + 27396870400 = 451829^2 + 165520^2 .

It is a cyclic number.

It is not a de Polignac number, because 231546315641 - 2⁶ = 231546315577 is a prime.

It is a super-2 number, since 2×231546315641² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (231546315841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115773157820 + 115773157821.

It is an arithmetic number, because the mean of its divisors is an integer number (115773157821).

Almost surely, 2^231546315641 is an apocalyptic number.

It is an amenable number.

231546315641 is a deficient number, since it is larger than the sum of its proper divisors (1).

231546315641 is an equidigital number, since it uses as much as digits as its factorization.

231546315641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 259200, while the sum is 41.

The spelling of 231546315641 in words is "two hundred thirty-one billion, five hundred forty-six million, three hundred fifteen thousand, six hundred forty-one".