117012171506831 has 2 divisors, whose sum is σ = 117012171506832. Its totient is φ = 117012171506830.

The previous prime is 117012171506767. The next prime is 117012171506843. The reversal of 117012171506831 is 138605171210711.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 117012171506831 - 2⁶ = 117012171506767 is a prime.

It is a super-2 number, since 2×117012171506831² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117012171506731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58506085753415 + 58506085753416.

It is an arithmetic number, because the mean of its divisors is an integer number (58506085753416).

Almost surely, 2^{117012171506831} is an apocalyptic number.

117012171506831 is a deficient number, since it is larger than the sum of its proper divisors (1).

117012171506831 is an equidigital number, since it uses as much as digits as its factorization.

117012171506831 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 70560, while the sum is 44.

The spelling of 117012171506831 in words is "one hundred seventeen trillion, twelve billion, one hundred seventy-one million, five hundred six thousand, eight hundred thirty-one".