117127431 has 32 divisors (see below), whose sum is σ = 184965120. Its totient is φ = 73082592.

The previous prime is 117127429. The next prime is 117127441. The reversal of 117127431 is 134721711.

It is not a de Polignac number, because 117127431 - 2¹ = 117127429 is a prime.

It is a super-2 number, since 2×117127431² = 27437670185319522, which contains 22 as substring.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

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

It is a junction number, because it is equal to n+sod(n) for n = 117127395 and 117127404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117127411) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27181 + ... + 31193.

It is an arithmetic number, because the mean of its divisors is an integer number (5780160).

Almost surely, 2^117127431 is an apocalyptic number.

117127431 is a deficient number, since it is larger than the sum of its proper divisors (67837689).

117127431 is a wasteful number, since it uses less digits than its factorization.

117127431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4092 (or 4086 counting only the distinct ones).

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

The square root of 117127431 is about 10822.5427234084. The cubic root of 117127431 is about 489.2748276345.

The spelling of 117127431 in words is "one hundred seventeen million, one hundred twenty-seven thousand, four hundred thirty-one".