113213312131 has 4 divisors (see below), whose sum is σ = 113214999664. Its totient is φ = 113211624600.

The previous prime is 113213312129. The next prime is 113213312141. The reversal of 113213312131 is 131213312311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 131213312311 = 114941 ⋅1141571.

It is a cyclic number.

It is not a de Polignac number, because 113213312131 - 2¹ = 113213312129 is a prime.

It is a super-2 number, since 2×113213312131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (113213312101) 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, 738780 + ... + 878761.

It is an arithmetic number, because the mean of its divisors is an integer number (28303749916).

Almost surely, 2^113213312131 is an apocalyptic number.

113213312131 is a deficient number, since it is larger than the sum of its proper divisors (1687533).

113213312131 is an equidigital number, since it uses as much as digits as its factorization.

113213312131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1687532.

The product of its digits is 324, while the sum is 22.

Adding to 113213312131 its reverse (131213312311), we get a palindrome (244426624442).

The spelling of 113213312131 in words is "one hundred thirteen billion, two hundred thirteen million, three hundred twelve thousand, one hundred thirty-one".