117412731 has 6 divisors (see below), whose sum is σ = 169596180. Its totient is φ = 78275148.

The previous prime is 117412703. The next prime is 117412753. The reversal of 117412731 is 137214711.

It is not a de Polignac number, because 117412731 - 2⁶ = 117412667 is a prime.

It is a super-2 number, since 2×117412731² = 27571498801756722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 117412695 and 117412704.

It is not an unprimeable number, because it can be changed into a prime (117412781) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6522921 + ... + 6522938.

It is an arithmetic number, because the mean of its divisors is an integer number (28266030).

Almost surely, 2^117412731 is an apocalyptic number.

117412731 is a deficient number, since it is larger than the sum of its proper divisors (52183449).

117412731 is a wasteful number, since it uses less digits than its factorization.

117412731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13045865 (or 13045862 counting only the distinct ones).

The product of its digits is 1176, while the sum is 27.

The square root of 117412731 is about 10835.7155278274. The cubic root of 117412731 is about 489.6717654597.

The spelling of 117412731 in words is "one hundred seventeen million, four hundred twelve thousand, seven hundred thirty-one".