12310232331 has 4 divisors (see below), whose sum is σ = 16413643112. Its totient is φ = 8206821552.

The previous prime is 12310232327. The next prime is 12310232383. The reversal of 12310232331 is 13323201321.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 12310232331 - 2² = 12310232327 is a prime.

It is a super-2 number, since 2×12310232331² (a number of 21 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 = 12310232298 and 12310232307.

It is not an unprimeable number, because it can be changed into a prime (12310212331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2051705386 + ... + 2051705391.

It is an arithmetic number, because the mean of its divisors is an integer number (4103410778).

Almost surely, 2^12310232331 is an apocalyptic number.

12310232331 is a deficient number, since it is larger than the sum of its proper divisors (4103410781).

12310232331 is an equidigital number, since it uses as much as digits as its factorization.

12310232331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4103410780.

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

Adding to 12310232331 its reverse (13323201321), we get a palindrome (25633433652).

The spelling of 12310232331 in words is "twelve billion, three hundred ten million, two hundred thirty-two thousand, three hundred thirty-one".