113990431 has 2 divisors, whose sum is σ = 113990432. Its totient is φ = 113990430.

The previous prime is 113990413. The next prime is 113990447. The reversal of 113990431 is 134099311.

Together with previous prime (113990413) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 113990431 - 2²¹ = 111893279 is a prime.

It is a super-2 number, since 2×113990431² = 25987636719131522, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 113990393 and 113990402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (113990731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56995215 + 56995216.

It is an arithmetic number, because the mean of its divisors is an integer number (56995216).

Almost surely, 2^113990431 is an apocalyptic number.

113990431 is a deficient number, since it is larger than the sum of its proper divisors (1).

113990431 is an equidigital number, since it uses as much as digits as its factorization.

113990431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2916, while the sum is 31.

The square root of 113990431 is about 10676.6301331459. The cubic root of 113990431 is about 484.8671914676.

The spelling of 113990431 in words is "one hundred thirteen million, nine hundred ninety thousand, four hundred thirty-one".