31097601 has 20 divisors (see below), whose sum is σ = 46835712. Its totient is φ = 20561688.

The previous prime is 31097593. The next prime is 31097603. The reversal of 31097601 is 10679013.

It is not a de Polignac number, because 31097601 - 2³ = 31097593 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (31097603) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 8776 + ... + 11798.

Almost surely, 2^31097601 is an apocalyptic number.

It is an amenable number.

31097601 is a deficient number, since it is larger than the sum of its proper divisors (15738111).

31097601 is a wasteful number, since it uses less digits than its factorization.

31097601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3162 (or 3153 counting only the distinct ones).

The product of its (nonzero) digits is 1134, while the sum is 27.

The square root of 31097601 is about 5576.5223033715. The cubic root of 31097601 is about 314.4673993082.

The spelling of 31097601 in words is "thirty-one million, ninety-seven thousand, six hundred one".