31674213 has 32 divisors (see below), whose sum is σ = 50123520. Its totient is φ = 19699200.

The previous prime is 31674199. The next prime is 31674217. The reversal of 31674213 is 31247613.

It is not a de Polignac number, because 31674213 - 2²⁴ = 14896997 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31674217) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 69081 + ... + 69537.

It is an arithmetic number, because the mean of its divisors is an integer number (1566360).

Almost surely, 2^31674213 is an apocalyptic number.

It is an amenable number.

31674213 is a deficient number, since it is larger than the sum of its proper divisors (18449307).

31674213 is a wasteful number, since it uses less digits than its factorization.

31674213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634 (or 628 counting only the distinct ones).

The product of its digits is 3024, while the sum is 27.

The square root of 31674213 is about 5627.9848080818. The cubic root of 31674213 is about 316.3991278013.

It can be divided in two parts, 316 and 74213, that added together give a square (74529 = 273²).

The spelling of 31674213 in words is "thirty-one million, six hundred seventy-four thousand, two hundred thirteen".