31422477 has 16 divisors (see below), whose sum is σ = 44478720. Its totient is φ = 19663872.

The previous prime is 31422473. The next prime is 31422493. The reversal of 31422477 is 77422413.

It is not a de Polignac number, because 31422477 - 2² = 31422473 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31422473) 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, 29724 + ... + 30762.

It is an arithmetic number, because the mean of its divisors is an integer number (2779920).

Almost surely, 2^31422477 is an apocalyptic number.

It is an amenable number.

31422477 is a deficient number, since it is larger than the sum of its proper divisors (13056243).

31422477 is a wasteful number, since it uses less digits than its factorization.

31422477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1652.

The product of its digits is 9408, while the sum is 30.

The square root of 31422477 is about 5605.5755279900. The cubic root of 31422477 is about 315.5586860257.

It can be divided in two parts, 314 and 22477, that added together give a triangular number (22791 = T₂₁₃).

The spelling of 31422477 in words is "thirty-one million, four hundred twenty-two thousand, four hundred seventy-seven".