31097796 has 24 divisors (see below), whose sum is σ = 72893184. Its totient is φ = 10318560.

The previous prime is 31097789. The next prime is 31097837. The reversal of 31097796 is 69779013.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3135 + ... + 8486.

It is an arithmetic number, because the mean of its divisors is an integer number (3037216).

Almost surely, 2^31097796 is an apocalyptic number.

It is an amenable number.

31097796 is an abundant number, since it is smaller than the sum of its proper divisors (41795388).

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

31097796 is a wasteful number, since it uses less digits than its factorization.

31097796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11851 (or 11849 counting only the distinct ones).

The product of its (nonzero) digits is 71442, while the sum is 42.

The square root of 31097796 is about 5576.5397873592. The cubic root of 31097796 is about 314.4680566045.

The spelling of 31097796 in words is "thirty-one million, ninety-seven thousand, seven hundred ninety-six".