31030331312013 has 64 divisors (see below), whose sum is σ = 48031923760128. Its totient is φ = 17610627640320.

The previous prime is 31030331311997. The next prime is 31030331312027. The reversal of 31030331312013 is 31021313303013.

It is not a de Polignac number, because 31030331312013 - 2⁴ = 31030331311997 is a prime.

It is a super-2 number, since 2×31030331312013² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31030331312053) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 95768706 + ... + 96092172.

It is an arithmetic number, because the mean of its divisors is an integer number (750498808752).

Almost surely, 2^{31030331312013} is an apocalyptic number.

31030331312013 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

It is an amenable number.

31030331312013 is a deficient number, since it is larger than the sum of its proper divisors (17001592448115).

31030331312013 is a wasteful number, since it uses less digits than its factorization.

31030331312013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324362.

The product of its (nonzero) digits is 1458, while the sum is 24.

Adding to 31030331312013 its reverse (31021313303013), we get a palindrome (62051644615026).

The spelling of 31030331312013 in words is "thirty-one trillion, thirty billion, three hundred thirty-one million, three hundred twelve thousand, thirteen".