31366551428012 has 12 divisors (see below), whose sum is σ = 54891569434800. Its totient is φ = 15683245875216.

The previous prime is 31366551428011. The next prime is 31366551428089. The reversal of 31366551428012 is 21082415566313.

It is a super-2 number, since 2×31366551428012² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31366551428011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5004728 + ... + 9369119.

It is an arithmetic number, because the mean of its divisors is an integer number (4574297452900).

Almost surely, 2^{31366551428012} is an apocalyptic number.

It is an amenable number.

31366551428012 is a deficient number, since it is larger than the sum of its proper divisors (23525018006788).

31366551428012 is a wasteful number, since it uses less digits than its factorization.

31366551428012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14919400 (or 14919398 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 47.

The spelling of 31366551428012 in words is "thirty-one trillion, three hundred sixty-six billion, five hundred fifty-one million, four hundred twenty-eight thousand, twelve".