31670520970 has 48 divisors (see below), whose sum is σ = 64407983328. Its totient is φ = 11119398080.

The previous prime is 31670520919. The next prime is 31670520977. The reversal of 31670520970 is 7902507613.

It is a super-2 number, since 2×31670520970² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31670520977) 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, 78664 + ... + 263683.

It is an arithmetic number, because the mean of its divisors is an integer number (1341832986).

Almost surely, 2^31670520970 is an apocalyptic number.

31670520970 is an abundant number, since it is smaller than the sum of its proper divisors (32737462358).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31670520970 is a wasteful number, since it uses less digits than its factorization.

31670520970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342423 (or 342394 counting only the distinct ones).

The product of its (nonzero) digits is 79380, while the sum is 40.

The spelling of 31670520970 in words is "thirty-one billion, six hundred seventy million, five hundred twenty thousand, nine hundred seventy".