118616131 has 2 divisors, whose sum is σ = 118616132. Its totient is φ = 118616130.

The previous prime is 118616093. The next prime is 118616143. The reversal of 118616131 is 131616811.

It is a strong prime.

It is an emirp because it is prime and its reverse (131616811) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 118616131 - 2⁹ = 118615619 is a prime.

It is a super-2 number, since 2×118616131² = 28139573066818322, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 118616131.

It is not a weakly prime, because it can be changed into another prime (118616171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59308065 + 59308066.

It is an arithmetic number, because the mean of its divisors is an integer number (59308066).

Almost surely, 2^118616131 is an apocalyptic number.

118616131 is a deficient number, since it is larger than the sum of its proper divisors (1).

118616131 is an equidigital number, since it uses as much as digits as its factorization.

118616131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 864, while the sum is 28.

The square root of 118616131 is about 10891.1032958098. The cubic root of 118616131 is about 491.3390156100.

The spelling of 118616131 in words is "one hundred eighteen million, six hundred sixteen thousand, one hundred thirty-one".