31011242312 has 32 divisors (see below), whose sum is σ = 61218033600. Its totient is φ = 14686743744.

The previous prime is 31011242267. The next prime is 31011242329. The reversal of 31011242312 is 21324211013.

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 in 7 ways as a sum of consecutive naturals, for example, 937853 + ... + 970355.

It is an arithmetic number, because the mean of its divisors is an integer number (1913063550).

Almost surely, 2^31011242312 is an apocalyptic number.

It is an amenable number.

31011242312 is a deficient number, since it is larger than the sum of its proper divisors (30206791288).

31011242312 is a wasteful number, since it uses less digits than its factorization.

31011242312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38805 (or 38801 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 31011242312 its reverse (21324211013), we get a palindrome (52335453325).

The spelling of 31011242312 in words is "thirty-one billion, eleven million, two hundred forty-two thousand, three hundred twelve".