117036991 has 2 divisors, whose sum is σ = 117036992. Its totient is φ = 117036990.

The previous prime is 117036973. The next prime is 117037009. The reversal of 117036991 is 199630711.

It is a balanced prime because it is at equal distance from previous prime (117036973) and next prime (117037009).

It is a cyclic number.

It is not a de Polignac number, because 117036991 - 2⁷ = 117036863 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 117036991.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117036911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58518495 + 58518496.

It is an arithmetic number, because the mean of its divisors is an integer number (58518496).

Almost surely, 2^117036991 is an apocalyptic number.

117036991 is a deficient number, since it is larger than the sum of its proper divisors (1).

117036991 is an equidigital number, since it uses as much as digits as its factorization.

117036991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10206, while the sum is 37.

The square root of 117036991 is about 10818.3636008409. The cubic root of 117036991 is about 489.1488639465.

The spelling of 117036991 in words is "one hundred seventeen million, thirty-six thousand, nine hundred ninety-one".