231541355312761 has 16 divisors (see below), whose sum is σ = 257403096670720. Its totient is φ = 206830126200960.

The previous prime is 231541355312723. The next prime is 231541355312791. The reversal of 231541355312761 is 167213553145132.

It is a cyclic number.

It is not a de Polignac number, because 231541355312761 - 2⁹ = 231541355312249 is a prime.

It is a super-2 number, since 2×231541355312761² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (231541355312791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6272950 + ... + 22415008.

It is an arithmetic number, because the mean of its divisors is an integer number (16087693541920).

Almost surely, 2^{231541355312761} is an apocalyptic number.

It is an amenable number.

231541355312761 is a deficient number, since it is larger than the sum of its proper divisors (25861741357959).

231541355312761 is a wasteful number, since it uses less digits than its factorization.

231541355312761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16177696.

The product of its digits is 2268000, while the sum is 49.

The spelling of 231541355312761 in words is "two hundred thirty-one trillion, five hundred forty-one billion, three hundred fifty-five million, three hundred twelve thousand, seven hundred sixty-one".