131113387 has 2 divisors, whose sum is σ = 131113388. Its totient is φ = 131113386.

The previous prime is 131113349. The next prime is 131113391. The reversal of 131113387 is 783311131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 131113387 - 2⁷ = 131113259 is a prime.

It is a super-2 number, since 2×131113387² = 34381440501223538, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (131113397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65556693 + 65556694.

It is an arithmetic number, because the mean of its divisors is an integer number (65556694).

Almost surely, 2^131113387 is an apocalyptic number.

131113387 is a deficient number, since it is larger than the sum of its proper divisors (1).

131113387 is an equidigital number, since it uses as much as digits as its factorization.

131113387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1512, while the sum is 28.

The square root of 131113387 is about 11450.4754049777. The cubic root of 131113387 is about 508.0217959834.

The spelling of 131113387 in words is "one hundred thirty-one million, one hundred thirteen thousand, three hundred eighty-seven".