13020332131 has 4 divisors (see below), whose sum is σ = 13586433552. Its totient is φ = 12454230712.

The previous prime is 13020332123. The next prime is 13020332183. The reversal of 13020332131 is 13123302031.

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

It is a cyclic number.

It is not a de Polignac number, because 13020332131 - 2³ = 13020332123 is a prime.

It is a super-2 number, since 2×13020332131² (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 = 13020332099 and 13020332108.

It is not an unprimeable number, because it can be changed into a prime (13020332111) 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, 283050676 + ... + 283050721.

It is an arithmetic number, because the mean of its divisors is an integer number (3396608388).

Almost surely, 2^13020332131 is an apocalyptic number.

13020332131 is a deficient number, since it is larger than the sum of its proper divisors (566101421).

13020332131 is an equidigital number, since it uses as much as digits as its factorization.

13020332131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 566101420.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 13020332131 its reverse (13123302031), we get a palindrome (26143634162).

It can be divided in two parts, 1302033 and 2131, that added together give a square (1304164 = 1142²).

The spelling of 13020332131 in words is "thirteen billion, twenty million, three hundred thirty-two thousand, one hundred thirty-one".