31212542007 has 12 divisors (see below), whose sum is σ = 45264406824. Its totient is φ = 20725458000.

The previous prime is 31212541993. The next prime is 31212542059. The reversal of 31212542007 is 70024521213.

It is not a de Polignac number, because 31212542007 - 2¹⁸ = 31212279863 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31212547007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6906228 + ... + 6910745.

It is an arithmetic number, because the mean of its divisors is an integer number (3772033902).

Almost surely, 2^31212542007 is an apocalyptic number.

31212542007 is a deficient number, since it is larger than the sum of its proper divisors (14051864817).

31212542007 is a wasteful number, since it uses less digits than its factorization.

31212542007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13817230 (or 13817227 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The spelling of 31212542007 in words is "thirty-one billion, two hundred twelve million, five hundred forty-two thousand, seven".