31397096 has 16 divisors (see below), whose sum is σ = 62332740. Its totient is φ = 14775040.

The previous prime is 31397083. The next prime is 31397129. The reversal of 31397096 is 69079313.

It can be written as a sum of positive squares in 2 ways, for example, as 31248100 + 148996 = 5590^2 + 386^2 .

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, 115295 + ... + 115566.

Almost surely, 2^31397096 is an apocalyptic number.

It is an amenable number.

31397096 is a deficient number, since it is larger than the sum of its proper divisors (30935644).

31397096 is a wasteful number, since it uses less digits than its factorization.

31397096 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230884 (or 230880 counting only the distinct ones).

The product of its (nonzero) digits is 30618, while the sum is 38.

The square root of 31397096 is about 5603.3111639458. The cubic root of 31397096 is about 315.4737006567.

The spelling of 31397096 in words is "thirty-one million, three hundred ninety-seven thousand, ninety-six".