131032230231 has 16 divisors (see below), whose sum is σ = 199930560768. Its totient is φ = 74777160000.

The previous prime is 131032230221. The next prime is 131032230283. The reversal of 131032230231 is 132032230131.

It is not a de Polignac number, because 131032230231 - 2⁷ = 131032230103 is a prime.

It is a super-2 number, since 2×131032230231² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 131032230198 and 131032230207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131032230221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4083645 + ... + 4115606.

It is an arithmetic number, because the mean of its divisors is an integer number (12495660048).

Almost surely, 2^131032230231 is an apocalyptic number.

131032230231 is a deficient number, since it is larger than the sum of its proper divisors (68898330537).

131032230231 is an equidigital number, since it uses as much as digits as its factorization.

131032230231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8200022.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 131032230231 its reverse (132032230131), we get a palindrome (263064460362).

The spelling of 131032230231 in words is "one hundred thirty-one billion, thirty-two million, two hundred thirty thousand, two hundred thirty-one".