231541787145107 has 2 divisors, whose sum is σ = 231541787145108. Its totient is φ = 231541787145106.

The previous prime is 231541787145073. The next prime is 231541787145167. The reversal of 231541787145107 is 701541787145132.

It is a happy number.

231541787145107 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 231541787145107 - 2¹⁸ = 231541786882963 is a prime.

It is a super-2 number, since 2×231541787145107² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (231541787145167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115770893572553 + 115770893572554.

It is an arithmetic number, because the mean of its divisors is an integer number (115770893572554).

Almost surely, 2^{231541787145107} is an apocalyptic number.

231541787145107 is a deficient number, since it is larger than the sum of its proper divisors (1).

231541787145107 is an equidigital number, since it uses as much as digits as its factorization.

231541787145107 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6585600, while the sum is 56.

The spelling of 231541787145107 in words is "two hundred thirty-one trillion, five hundred forty-one billion, seven hundred eighty-seven million, one hundred forty-five thousand, one hundred seven".