31012011021013 has 32 divisors (see below), whose sum is σ = 34560569635200. Its totient is φ = 27591169858560.

The previous prime is 31012011020993. The next prime is 31012011021031.

It is a happy number.

31012011021013 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 31012011021013 - 2²⁹ = 31011474150101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31012011021113) 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 31 ways as a sum of consecutive naturals, for example, 249332763 + ... + 249457111.

It is an arithmetic number, because the mean of its divisors is an integer number (1080017801100).

Almost surely, 2^{31012011021013} is an apocalyptic number.

It is an amenable number.

31012011021013 is a deficient number, since it is larger than the sum of its proper divisors (3548558614187).

31012011021013 is a wasteful number, since it uses less digits than its factorization.

31012011021013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126837.

The product of its (nonzero) digits is 36, while the sum is 16.

It can be divided in two parts, 3101201 and 1021013, that added together give a palindrome (4122214).

The spelling of 31012011021013 in words is "thirty-one trillion, twelve billion, eleven million, twenty-one thousand, thirteen".