113331031031 has 4 divisors (see below), whose sum is σ = 113332298352. Its totient is φ = 113329763712.

The previous prime is 113331031003. The next prime is 113331031061. The reversal of 113331031031 is 130130133311.

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-113331031031 is a prime.

It is a super-2 number, since 2×113331031031² (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 = 113331030994 and 113331031012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113331031061) 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, 488426 + ... + 682071.

It is an arithmetic number, because the mean of its divisors is an integer number (28333074588).

Almost surely, 2^113331031031 is an apocalyptic number.

113331031031 is a deficient number, since it is larger than the sum of its proper divisors (1267321).

113331031031 is an equidigital number, since it uses as much as digits as its factorization.

113331031031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1267320.

The product of its (nonzero) digits is 243, while the sum is 20.

Adding to 113331031031 its reverse (130130133311), we get a palindrome (243461164342).

The spelling of 113331031031 in words is "one hundred thirteen billion, three hundred thirty-one million, thirty-one thousand, thirty-one".