31047201 has 6 divisors (see below), whose sum is σ = 44845970. Its totient is φ = 20698128.

The previous prime is 31047199. The next prime is 31047223. The reversal of 31047201 is 10274013.

It can be written as a sum of positive squares in only one way, i.e., 27720225 + 3326976 = 5265^2 + 1824^2 .

It is not a de Polignac number, because 31047201 - 2¹ = 31047199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31047271) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1724836 + ... + 1724853.

Almost surely, 2^31047201 is an apocalyptic number.

It is an amenable number.

31047201 is a deficient number, since it is larger than the sum of its proper divisors (13798769).

31047201 is a wasteful number, since it uses less digits than its factorization.

31047201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3449695 (or 3449692 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 31047201 is about 5572.0015254844. The cubic root of 31047201 is about 314.2974212778.

The spelling of 31047201 in words is "thirty-one million, forty-seven thousand, two hundred one".