117401731 has 4 divisors (see below), whose sum is σ = 119616912. Its totient is φ = 115186552.

The previous prime is 117401717. The next prime is 117401783. The reversal of 117401731 is 137104711.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 117401731 - 2⁵ = 117401699 is a prime.

It is a super-2 number, since 2×117401731² = 27566332883592722, 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 = 117401696 and 117401705.

It is not an unprimeable number, because it can be changed into a prime (117401231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1107511 + ... + 1107616.

It is an arithmetic number, because the mean of its divisors is an integer number (29904228).

Almost surely, 2^117401731 is an apocalyptic number.

117401731 is a deficient number, since it is larger than the sum of its proper divisors (2215181).

117401731 is an equidigital number, since it uses as much as digits as its factorization.

117401731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2215180.

The product of its (nonzero) digits is 588, while the sum is 25.

The square root of 117401731 is about 10835.2079352452. The cubic root of 117401731 is about 489.6564730873.

The spelling of 117401731 in words is "one hundred seventeen million, four hundred one thousand, seven hundred thirty-one".