116309291 has 12 divisors (see below), whose sum is σ = 143258328. Its totient is φ = 93828672.

The previous prime is 116309287. The next prime is 116309299. The reversal of 116309291 is 192903611.

It is not a de Polignac number, because 116309291 - 2² = 116309287 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (116309299) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 68981 + ... + 70646.

It is an arithmetic number, because the mean of its divisors is an integer number (11938194).

Almost surely, 2^116309291 is an apocalyptic number.

116309291 is a deficient number, since it is larger than the sum of its proper divisors (26949037).

116309291 is a wasteful number, since it uses less digits than its factorization.

116309291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139658 (or 139651 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 32.

The square root of 116309291 is about 10784.6785302113. The cubic root of 116309291 is about 488.1329631306.

The spelling of 116309291 in words is "one hundred sixteen million, three hundred nine thousand, two hundred ninety-one".