31474917 has 6 divisors (see below), whose sum is σ = 45463782. Its totient is φ = 20983272.

The previous prime is 31474873. The next prime is 31474931. The reversal of 31474917 is 71947413.

It can be written as a sum of positive squares in only one way, i.e., 23824161 + 7650756 = 4881^2 + 2766^2 .

It is a de Polignac number, because none of the positive numbers 2^k-31474917 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31474997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1748598 + ... + 1748615.

It is an arithmetic number, because the mean of its divisors is an integer number (7577297).

Almost surely, 2^31474917 is an apocalyptic number.

It is an amenable number.

31474917 is a deficient number, since it is larger than the sum of its proper divisors (13988865).

31474917 is a wasteful number, since it uses less digits than its factorization.

31474917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3497219 (or 3497216 counting only the distinct ones).

The product of its digits is 21168, while the sum is 36.

The square root of 31474917 is about 5610.2510639008. The cubic root of 31474917 is about 315.7341305076.

The spelling of 31474917 in words is "thirty-one million, four hundred seventy-four thousand, nine hundred seventeen".