13420251131 has 4 divisors (see below), whose sum is σ = 15337429872. Its totient is φ = 11503072392.

The previous prime is 13420251121. The next prime is 13420251139. The reversal of 13420251131 is 13115202431.

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

It is not a de Polignac number, because 13420251131 - 2¹⁸ = 13419988987 is a prime.

It is a super-2 number, since 2×13420251131² (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 = 13420251097 and 13420251106.

It is not an unprimeable number, because it can be changed into a prime (13420251139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 958589360 + ... + 958589373.

It is an arithmetic number, because the mean of its divisors is an integer number (3834357468).

Almost surely, 2^13420251131 is an apocalyptic number.

13420251131 is a deficient number, since it is larger than the sum of its proper divisors (1917178741).

13420251131 is an equidigital number, since it uses as much as digits as its factorization.

13420251131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1917178740.

The product of its (nonzero) digits is 720, while the sum is 23.

Adding to 13420251131 its reverse (13115202431), we get a palindrome (26535453562).

The spelling of 13420251131 in words is "thirteen billion, four hundred twenty million, two hundred fifty-one thousand, one hundred thirty-one".