312123415431 has 16 divisors (see below), whose sum is σ = 416928272768. Its totient is φ = 207700653600.

The previous prime is 312123415381. The next prime is 312123415433. The reversal of 312123415431 is 134514321213.

It is not a de Polignac number, because 312123415431 - 2⁹ = 312123414919 is a prime.

It is a super-2 number, since 2×312123415431² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312123415433) 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, 5583801 + ... + 5639421.

It is an arithmetic number, because the mean of its divisors is an integer number (26058017048).

Almost surely, 2^312123415431 is an apocalyptic number.

312123415431 is a deficient number, since it is larger than the sum of its proper divisors (104804857337).

312123415431 is a wasteful number, since it uses less digits than its factorization.

312123415431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59022.

The product of its digits is 8640, while the sum is 30.

Adding to 312123415431 its reverse (134514321213), we get a palindrome (446637736644).

The spelling of 312123415431 in words is "three hundred twelve billion, one hundred twenty-three million, four hundred fifteen thousand, four hundred thirty-one".