312130233131 has 4 divisors (see below), whose sum is σ = 312150151272. Its totient is φ = 312110314992.

The previous prime is 312130233097. The next prime is 312130233137. The reversal of 312130233131 is 131332031213.

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

It is a cyclic number.

It is not a de Polignac number, because 312130233131 - 2³⁴ = 294950363947 is a prime.

It is a super-2 number, since 2×312130233131² (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 = 312130233097 and 312130233106.

It is not an unprimeable number, because it can be changed into a prime (312130233137) 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, 9935546 + ... + 9966911.

It is an arithmetic number, because the mean of its divisors is an integer number (78037537818).

Almost surely, 2^312130233131 is an apocalyptic number.

312130233131 is a deficient number, since it is larger than the sum of its proper divisors (19918141).

312130233131 is a wasteful number, since it uses less digits than its factorization.

312130233131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19918140.

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 312130233131 its reverse (131332031213), we get a palindrome (443462264344).

The spelling of 312130233131 in words is "three hundred twelve billion, one hundred thirty million, two hundred thirty-three thousand, one hundred thirty-one".