131113031 has 8 divisors (see below), whose sum is σ = 155010720. Its totient is φ = 108507168.

The previous prime is 131113019. The next prime is 131113069. The reversal of 131113031 is 130311131.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 131113031 - 2⁶ = 131112967 is a prime.

It is a super-2 number, since 2×131113031² = 34381253796013922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131112997 and 131113015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131113831) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 322736 + ... + 323141.

It is an arithmetic number, because the mean of its divisors is an integer number (19376340).

Almost surely, 2^131113031 is an apocalyptic number.

131113031 is a deficient number, since it is larger than the sum of its proper divisors (23897689).

131113031 is an equidigital number, since it uses as much as digits as its factorization.

131113031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 645913.

The product of its (nonzero) digits is 27, while the sum is 14.

The square root of 131113031 is about 11450.4598597611. The cubic root of 131113031 is about 508.0213361882.

Adding to 131113031 its reverse (130311131), we get a palindrome (261424162).

The spelling of 131113031 in words is "one hundred thirty-one million, one hundred thirteen thousand, thirty-one".