31030003013 has 4 divisors (see below), whose sum is σ = 31030918380. Its totient is φ = 31029087648.

The previous prime is 31030002989. The next prime is 31030003019.

31030003013 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4987466884 + 26042536129 = 70622^2 + 161377^2 .

It is a cyclic number.

It is not a de Polignac number, because 31030003013 - 2²⁴ = 31013225797 is a prime.

It is a super-2 number, since 2×31030003013² (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 (31030003019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 404798 + ... + 475311.

It is an arithmetic number, because the mean of its divisors is an integer number (7757729595).

Almost surely, 2^31030003013 is an apocalyptic number.

It is an amenable number.

31030003013 is a deficient number, since it is larger than the sum of its proper divisors (915367).

31030003013 is an equidigital number, since it uses as much as digits as its factorization.

31030003013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 915366.

The product of its (nonzero) digits is 81, while the sum is 14.

It can be divided in two parts, 3103000 and 3013, that added together give a palindrome (3106013).

The spelling of 31030003013 in words is "thirty-one billion, thirty million, three thousand, thirteen".