13021012031 has 4 divisors (see below), whose sum is σ = 13021240272. Its totient is φ = 13020783792.

The previous prime is 13021012013. The next prime is 13021012049.

13021012031 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 an interprime number because it is at equal distance from previous prime (13021012013) and next prime (13021012049).

It is a cyclic number.

It is not a de Polignac number, because 13021012031 - 2¹⁰ = 13021011007 is a prime.

It is a super-2 number, since 2×13021012031² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13021011997 and 13021012015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13021012061) 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, 54755 + ... + 170411.

It is an arithmetic number, because the mean of its divisors is an integer number (3255310068).

Almost surely, 2^13021012031 is an apocalyptic number.

13021012031 is a deficient number, since it is larger than the sum of its proper divisors (228241).

13021012031 is a wasteful number, since it uses less digits than its factorization.

13021012031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228240.

The product of its (nonzero) digits is 36, while the sum is 14.

It can be divided in two parts, 130210 and 12031, that added together give a palindrome (142241).

The spelling of 13021012031 in words is "thirteen billion, twenty-one million, twelve thousand, thirty-one".