31030503013 has 4 divisors (see below), whose sum is σ = 31032253408. Its totient is φ = 31028752620.

The previous prime is 31030502939. The next prime is 31030503029.

31030503013 is nontrivially palindromic in base 10.

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 31030503013 - 2¹³ = 31030494821 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 (31030503113) 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, 848331 + ... + 884152.

It is an arithmetic number, because the mean of its divisors is an integer number (7758063352).

Almost surely, 2^31030503013 is an apocalyptic number.

It is an amenable number.

31030503013 is a deficient number, since it is larger than the sum of its proper divisors (1750395).

31030503013 is a wasteful number, since it uses less digits than its factorization.

31030503013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1750394.

The product of its (nonzero) digits is 405, while the sum is 19.

The spelling of 31030503013 in words is "thirty-one billion, thirty million, five hundred three thousand, thirteen".