113731 has 2 divisors, whose sum is σ = 113732. Its totient is φ = 113730.

The previous prime is 113723. The next prime is 113749. The reversal of 113731 is 137311.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 113731 - 2³ = 113723 is a prime.

It is a super-2 number, since 2×113731² = 25869480722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (113761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56865 + 56866.

It is an arithmetic number, because the mean of its divisors is an integer number (56866).

2¹¹³⁷³¹ is an apocalyptic number.

113731 is a deficient number, since it is larger than the sum of its proper divisors (1).

113731 is an equidigital number, since it uses as much as digits as its factorization.

113731 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 63, while the sum is 16.

The square root of 113731 is about 337.2402704304. The cubic root of 113731 is about 48.4499075395.

It can be divided in two parts, 11 and 3731, that multiplied together give a triangular number (41041 = T₂₈₆).

The spelling of 113731 in words is "one hundred thirteen thousand, seven hundred thirty-one".