31279348 has 12 divisors (see below), whose sum is σ = 55102432. Its totient is φ = 15535800.

The previous prime is 31279343. The next prime is 31279357. The reversal of 31279348 is 84397213.

It is a super-2 number, since 2×31279348² = 1956795222610208, which contains 22 as substring.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31279343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25290 + ... + 26497.

Almost surely, 2^31279348 is an apocalyptic number.

It is an amenable number.

31279348 is a deficient number, since it is larger than the sum of its proper divisors (23823084).

31279348 is a wasteful number, since it uses less digits than its factorization.

31279348 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51942 (or 51940 counting only the distinct ones).

The product of its digits is 36288, while the sum is 37.

The square root of 31279348 is about 5592.7942926591. The cubic root of 31279348 is about 315.0788347238.

The spelling of 31279348 in words is "thirty-one million, two hundred seventy-nine thousand, three hundred forty-eight".