31426615431 has 12 divisors (see below), whose sum is σ = 45694624560. Its totient is φ = 20812327200.

The previous prime is 31426615369. The next prime is 31426615447. The reversal of 31426615431 is 13451662413.

31426615431 is a `hidden beast` number, since 3 + 1 + 4 + 2 + 6 + 615 + 4 + 31 = 666.

It is not a de Polignac number, because 31426615431 - 2¹³ = 31426607239 is a prime.

It is a super-3 number, since 3×31426615431³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31426615331) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11561046 + ... + 11563763.

It is an arithmetic number, because the mean of its divisors is an integer number (3807885380).

Almost surely, 2^31426615431 is an apocalyptic number.

31426615431 is a deficient number, since it is larger than the sum of its proper divisors (14268009129).

31426615431 is a wasteful number, since it uses less digits than its factorization.

31426615431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23124966 (or 23124963 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The spelling of 31426615431 in words is "thirty-one billion, four hundred twenty-six million, six hundred fifteen thousand, four hundred thirty-one".