31142512 has 10 divisors (see below), whose sum is σ = 60338648. Its totient is φ = 15571248.

The previous prime is 31142497. The next prime is 31142537. The reversal of 31142512 is 21524113.

It is a self number, because there is not a number n which added to its sum of digits gives 31142512.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 973188 + ... + 973219.

Almost surely, 2^31142512 is an apocalyptic number.

It is an amenable number.

31142512 is a deficient number, since it is larger than the sum of its proper divisors (29196136).

31142512 is a wasteful number, since it uses less digits than its factorization.

31142512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1946415 (or 1946409 counting only the distinct ones).

The product of its digits is 240, while the sum is 19.

The square root of 31142512 is about 5580.5476433769. The cubic root of 31142512 is about 314.6187105729.

Adding to 31142512 its reverse (21524113), we get a palindrome (52666625).

The spelling of 31142512 in words is "thirty-one million, one hundred forty-two thousand, five hundred twelve".