117326731 has 2 divisors, whose sum is σ = 117326732. Its totient is φ = 117326730.

The previous prime is 117326669. The next prime is 117326743. The reversal of 117326731 is 137623711.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-117326731 is a prime.

It is a super-2 number, since 2×117326731² = 27531123614292722, 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 = 117326693 and 117326702.

It is not a weakly prime, because it can be changed into another prime (117396731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58663365 + 58663366.

It is an arithmetic number, because the mean of its divisors is an integer number (58663366).

Almost surely, 2^117326731 is an apocalyptic number.

117326731 is a deficient number, since it is larger than the sum of its proper divisors (1).

117326731 is an equidigital number, since it uses as much as digits as its factorization.

117326731 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5292, while the sum is 31.

The square root of 117326731 is about 10831.7464427487. The cubic root of 117326731 is about 489.5521814436.

The spelling of 117326731 in words is "one hundred seventeen million, three hundred twenty-six thousand, seven hundred thirty-one".