113111031331 has 4 divisors (see below), whose sum is σ = 113111755312. Its totient is φ = 113110307352.

The previous prime is 113111031323. The next prime is 113111031373. The reversal of 113111031331 is 133130111311.

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 a cyclic number.

It is not a de Polignac number, because 113111031331 - 2³ = 113111031323 is a prime.

It is a super-2 number, since 2×113111031331² (a number of 23 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 = 113111031299 and 113111031308.

It is not an unprimeable number, because it can be changed into a prime (113111031391) 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, 19836 + ... + 476041.

It is an arithmetic number, because the mean of its divisors is an integer number (28277938828).

Almost surely, 2^113111031331 is an apocalyptic number.

113111031331 is a deficient number, since it is larger than the sum of its proper divisors (723981).

113111031331 is an equidigital number, since it uses as much as digits as its factorization.

113111031331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 723980.

The product of its (nonzero) digits is 81, while the sum is 19.

Adding to 113111031331 its reverse (133130111311), we get a palindrome (246241142642).

The spelling of 113111031331 in words is "one hundred thirteen billion, one hundred eleven million, thirty-one thousand, three hundred thirty-one".