31970463 has 16 divisors (see below), whose sum is σ = 49167360. Its totient is φ = 18099936.

The previous prime is 31970459. The next prime is 31970473. The reversal of 31970463 is 36407913.

It is not a de Polignac number, because 31970463 - 2² = 31970459 is a prime.

It is a super-2 number, since 2×31970463² = 2044221008868738, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31970473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4695 + ... + 9272.

It is an arithmetic number, because the mean of its divisors is an integer number (3072960).

Almost surely, 2^31970463 is an apocalyptic number.

31970463 is a deficient number, since it is larger than the sum of its proper divisors (17196897).

31970463 is a wasteful number, since it uses less digits than its factorization.

31970463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14086.

The product of its (nonzero) digits is 13608, while the sum is 33.

The square root of 31970463 is about 5654.2429201441. The cubic root of 31970463 is about 317.3824989387.

The spelling of 31970463 in words is "thirty-one million, nine hundred seventy thousand, four hundred sixty-three".