231132312031 has 8 divisors (see below), whose sum is σ = 231762097280. Its totient is φ = 230502632472.

The previous prime is 231132311953. The next prime is 231132312101. The reversal of 231132312031 is 130213231132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 231132312031 - 2¹⁵ = 231132279263 is a prime.

It is a super-2 number, since 2×231132312031² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231132311993 and 231132312011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231132012031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6570616 + ... + 6605698.

It is an arithmetic number, because the mean of its divisors is an integer number (28970262160).

Almost surely, 2^231132312031 is an apocalyptic number.

231132312031 is a deficient number, since it is larger than the sum of its proper divisors (629785249).

231132312031 is a wasteful number, since it uses less digits than its factorization.

231132312031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52845.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 231132312031 its reverse (130213231132), we get a palindrome (361345543163).

The spelling of 231132312031 in words is "two hundred thirty-one billion, one hundred thirty-two million, three hundred twelve thousand, thirty-one".