117235431 has 10 divisors (see below), whose sum is σ = 175129592. Its totient is φ = 78156900.

The previous prime is 117235427. The next prime is 117235457. The reversal of 117235431 is 134532711.

117235431 is a `hidden beast` number, since 117 + 2 + 3 + 543 + 1 = 666.

It is not a de Polignac number, because 117235431 - 2² = 117235427 is a prime.

It is a super-2 number, since 2×117235431² = 27488292563511522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 117235395 and 117235404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117235411) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 723595 + ... + 723756.

Almost surely, 2^117235431 is an apocalyptic number.

117235431 is a deficient number, since it is larger than the sum of its proper divisors (57894161).

117235431 is an equidigital number, since it uses as much as digits as its factorization.

117235431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1447363 (or 1447354 counting only the distinct ones).

The product of its digits is 2520, while the sum is 27.

The square root of 117235431 is about 10827.5311590408. The cubic root of 117235431 is about 489.4251637484.

The spelling of 117235431 in words is "one hundred seventeen million, two hundred thirty-five thousand, four hundred thirty-one".