116121731 has 16 divisors (see below), whose sum is σ = 129064320. Its totient is φ = 103595520.

The previous prime is 116121721. The next prime is 116121737. The reversal of 116121731 is 137121611.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-116121731 is a prime.

It is a super-2 number, since 2×116121731² = 26968512820872722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 116121697 and 116121706.

It is not an unprimeable number, because it can be changed into a prime (116121737) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 175880 + ... + 176538.

It is an arithmetic number, because the mean of its divisors is an integer number (8066520).

Almost surely, 2^116121731 is an apocalyptic number.

116121731 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

116121731 is a deficient number, since it is larger than the sum of its proper divisors (12942589).

116121731 is a wasteful number, since it uses less digits than its factorization.

116121731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 946.

The product of its digits is 252, while the sum is 23.

The square root of 116121731 is about 10775.9793522445. The cubic root of 116121731 is about 487.8704347311.

The spelling of 116121731 in words is "one hundred sixteen million, one hundred twenty-one thousand, seven hundred thirty-one".