113111210213231 has 4 divisors (see below), whose sum is σ = 113209482334464. Its totient is φ = 113012938092000.

The previous prime is 113111210213203. The next prime is 113111210213299. The reversal of 113111210213231 is 132312012111311.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-113111210213231 is a prime.

It is a super-2 number, since 2×113111210213231² (a number of 29 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 = 113111210213197 and 113111210213206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113111210213201) 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, 49136058890 + ... + 49136061191.

It is an arithmetic number, because the mean of its divisors is an integer number (28302370583616).

Almost surely, 2^{113111210213231} is an apocalyptic number.

113111210213231 is a deficient number, since it is larger than the sum of its proper divisors (98272121233).

113111210213231 is an equidigital number, since it uses as much as digits as its factorization.

113111210213231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98272121232.

The product of its (nonzero) digits is 216, while the sum is 23.

Adding to 113111210213231 its reverse (132312012111311), we get a palindrome (245423222324542).

The spelling of 113111210213231 in words is "one hundred thirteen trillion, one hundred eleven billion, two hundred ten million, two hundred thirteen thousand, two hundred thirty-one".