31342312 has 16 divisors (see below), whose sum is σ = 59197860. Its totient is φ = 15556224.

The previous prime is 31342277. The next prime is 31342319. The reversal of 31342312 is 21324313.

It can be written as a sum of positive squares in 2 ways, for example, as 26563716 + 4778596 = 5154^2 + 2186^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 31342312.

It is not an unprimeable number, because it can be changed into a prime (31342319) 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, 13203 + ... + 15394.

Almost surely, 2^31342312 is an apocalyptic number.

It is an amenable number.

31342312 is a deficient number, since it is larger than the sum of its proper divisors (27855548).

31342312 is a wasteful number, since it uses less digits than its factorization.

31342312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28740 (or 28736 counting only the distinct ones).

The product of its digits is 432, while the sum is 19.

The square root of 31342312 is about 5598.4204915315. The cubic root of 31342312 is about 315.2901064675.

Adding to 31342312 its reverse (21324313), we get a palindrome (52666625).

The spelling of 31342312 in words is "thirty-one million, three hundred forty-two thousand, three hundred twelve".