31038682013 has 4 divisors (see below), whose sum is σ = 31049245920. Its totient is φ = 31028118108.

The previous prime is 31038682009. The next prime is 31038682027. The reversal of 31038682013 is 31028683013.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 31038682013 - 2² = 31038682009 is a prime.

It is a super-2 number, since 2×31038682013² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31038082013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5277545 + ... + 5283422.

It is an arithmetic number, because the mean of its divisors is an integer number (7762311480).

Almost surely, 2^31038682013 is an apocalyptic number.

It is an amenable number.

31038682013 is a deficient number, since it is larger than the sum of its proper divisors (10563907).

31038682013 is a wasteful number, since it uses less digits than its factorization.

31038682013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10563906.

The product of its (nonzero) digits is 20736, while the sum is 35.

The spelling of 31038682013 in words is "thirty-one billion, thirty-eight million, six hundred eighty-two thousand, thirteen".