116631389 has 16 divisors (see below), whose sum is σ = 136272000. Its totient is φ = 97758144.

The previous prime is 116631371. The next prime is 116631397. The reversal of 116631389 is 983136611.

It is a cyclic number.

It is not a de Polignac number, because 116631389 - 2⁸ = 116631133 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (116631349) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69047 + ... + 70715.

It is an arithmetic number, because the mean of its divisors is an integer number (8517000).

Almost surely, 2^116631389 is an apocalyptic number.

It is an amenable number.

116631389 is a deficient number, since it is larger than the sum of its proper divisors (19640611).

116631389 is a wasteful number, since it uses less digits than its factorization.

116631389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1892.

The product of its digits is 23328, while the sum is 38.

The square root of 116631389 is about 10799.6013352346. The cubic root of 116631389 is about 488.5831471057.

The spelling of 116631389 in words is "one hundred sixteen million, six hundred thirty-one thousand, three hundred eighty-nine".