31896536 has 16 divisors (see below), whose sum is σ = 68349840. Its totient is φ = 13669920.

The previous prime is 31896523. The next prime is 31896541. The reversal of 31896536 is 63569813.

It is a junction number, because it is equal to n+sod(n) for n = 31896493 and 31896502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 284735 + ... + 284846.

It is an arithmetic number, because the mean of its divisors is an integer number (4271865).

Almost surely, 2^31896536 is an apocalyptic number.

It is an amenable number.

31896536 is an abundant number, since it is smaller than the sum of its proper divisors (36453304).

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

31896536 is a wasteful number, since it uses less digits than its factorization.

31896536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 569594 (or 569590 counting only the distinct ones).

The product of its digits is 116640, while the sum is 41.

The square root of 31896536 is about 5647.7018334894. The cubic root of 31896536 is about 317.1376766655.

The spelling of 31896536 in words is "thirty-one million, eight hundred ninety-six thousand, five hundred thirty-six".