231132312310331 has 12 divisors (see below), whose sum is σ = 252349061976000. Its totient is φ = 211416851904048.

The previous prime is 231132312310283. The next prime is 231132312310337. The reversal of 231132312310331 is 133013213231132.

It is not a de Polignac number, because 231132312310331 - 2²⁶ = 231132245201467 is a prime.

It is a super-2 number, since 2×231132312310331² (a number of 30 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231132312310294 and 231132312310303.

It is not an unprimeable number, because it can be changed into a prime (231132312310337) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11038881131 + ... + 11038902068.

It is an arithmetic number, because the mean of its divisors is an integer number (21029088498000).

Almost surely, 2^{231132312310331} is an apocalyptic number.

231132312310331 is a deficient number, since it is larger than the sum of its proper divisors (21216749665669).

231132312310331 is a wasteful number, since it uses less digits than its factorization.

231132312310331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22077783266 (or 22077783247 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 29.

Adding to 231132312310331 its reverse (133013213231132), we get a palindrome (364145525541463).

The spelling of 231132312310331 in words is "two hundred thirty-one trillion, one hundred thirty-two billion, three hundred twelve million, three hundred ten thousand, three hundred thirty-one".