117390431 has 2 divisors, whose sum is σ = 117390432. Its totient is φ = 117390430.

The previous prime is 117390391. The next prime is 117390451. The reversal of 117390431 is 134093711.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 117390431 - 2¹⁰ = 117389407 is a prime.

It is a super-2 number, since 2×117390431² = 27561026580731522, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 117390394 and 117390403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117390451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58695215 + 58695216.

It is an arithmetic number, because the mean of its divisors is an integer number (58695216).

Almost surely, 2^117390431 is an apocalyptic number.

117390431 is a deficient number, since it is larger than the sum of its proper divisors (1).

117390431 is an equidigital number, since it uses as much as digits as its factorization.

117390431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2268, while the sum is 29.

The square root of 117390431 is about 10834.6864744671. The cubic root of 117390431 is about 489.6407626554.

The spelling of 117390431 in words is "one hundred seventeen million, three hundred ninety thousand, four hundred thirty-one".