31216774401 has 24 divisors (see below), whose sum is σ = 45218684160. Its totient is φ = 20752274400.

The previous prime is 31216774367. The next prime is 31216774411. The reversal of 31216774401 is 10447761213.

31216774401 is a `hidden beast` number, since 3 + 121 + 67 + 74 + 401 = 666.

It is not a de Polignac number, because 31216774401 - 2¹⁰ = 31216773377 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31216774411) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10909711 + ... + 10912571.

It is an arithmetic number, because the mean of its divisors is an integer number (1884111840).

Almost surely, 2^31216774401 is an apocalyptic number.

It is an amenable number.

31216774401 is a deficient number, since it is larger than the sum of its proper divisors (14001909759).

31216774401 is a wasteful number, since it uses less digits than its factorization.

31216774401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5877 (or 5874 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The spelling of 31216774401 in words is "thirty-one billion, two hundred sixteen million, seven hundred seventy-four thousand, four hundred one".