13020502031 has 4 divisors (see below), whose sum is σ = 13020731064. Its totient is φ = 13020273000.

The previous prime is 13020501947. The next prime is 13020502049.

13020502031 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 13020502031 - 2²² = 13016307727 is a prime.

It is a super-2 number, since 2×13020502031² (a number of 21 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 (13020502091) 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, 42761 + ... + 166941.

It is an arithmetic number, because the mean of its divisors is an integer number (3255182766).

Almost surely, 2^13020502031 is an apocalyptic number.

13020502031 is a deficient number, since it is larger than the sum of its proper divisors (229033).

13020502031 is a wasteful number, since it uses less digits than its factorization.

13020502031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229032.

The product of its (nonzero) digits is 180, while the sum is 17.

The spelling of 13020502031 in words is "thirteen billion, twenty million, five hundred two thousand, thirty-one".