31274213 has 8 divisors (see below), whose sum is σ = 32248320. Its totient is φ = 30306960.

The previous prime is 31274183. The next prime is 31274263. The reversal of 31274213 is 31247213.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31274213 - 2¹⁴ = 31257829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31274263) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8468 + ... + 11586.

It is an arithmetic number, because the mean of its divisors is an integer number (4031040).

Almost surely, 2^31274213 is an apocalyptic number.

It is an amenable number.

31274213 is a deficient number, since it is larger than the sum of its proper divisors (974107).

31274213 is a wasteful number, since it uses less digits than its factorization.

31274213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3427.

The product of its digits is 1008, while the sum is 23.

The square root of 31274213 is about 5592.3352009693. The cubic root of 31274213 is about 315.0615920545.

Subtracting from 31274213 its reverse (31247213), we obtain a cube (27000 = 30³).

The spelling of 31274213 in words is "thirty-one million, two hundred seventy-four thousand, two hundred thirteen".