31411312 has 10 divisors (see below), whose sum is σ = 60859448. Its totient is φ = 15705648.

The previous prime is 31411297. The next prime is 31411333. The reversal of 31411312 is 21311413.

It is a super-2 number, since 2×31411312² = 1973341043122688, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16), and also a Moran number because the ratio is a prime number: 1963207 = 31411312 / (3 + 1 + 4 + 1 + 1 + 3 + 1 + 2).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 981588 + ... + 981619.

Almost surely, 2^31411312 is an apocalyptic number.

It is an amenable number.

31411312 is a deficient number, since it is larger than the sum of its proper divisors (29448136).

31411312 is a wasteful number, since it uses less digits than its factorization.

31411312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1963215 (or 1963209 counting only the distinct ones).

The product of its digits is 72, while the sum is 16.

The square root of 31411312 is about 5604.5795560416. The cubic root of 31411312 is about 315.5213069430.

Adding to 31411312 its reverse (21311413), we get a palindrome (52722725).

The spelling of 31411312 in words is "thirty-one million, four hundred eleven thousand, three hundred twelve".