131616677 has 2 divisors, whose sum is σ = 131616678. Its totient is φ = 131616676.

The previous prime is 131616673. The next prime is 131616689. The reversal of 131616677 is 776616131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 111492481 + 20124196 = 10559^2 + 4486^2 .

It is a cyclic number.

It is not a de Polignac number, because 131616677 - 2² = 131616673 is a prime.

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 131616677.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131616673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65808338 + 65808339.

It is an arithmetic number, because the mean of its divisors is an integer number (65808339).

Almost surely, 2^131616677 is an apocalyptic number.

It is an amenable number.

131616677 is a deficient number, since it is larger than the sum of its proper divisors (1).

131616677 is an equidigital number, since it uses as much as digits as its factorization.

131616677 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31752, while the sum is 38.

The square root of 131616677 is about 11472.4311721622. The cubic root of 131616677 is about 508.6709944587.

The spelling of 131616677 in words is "one hundred thirty-one million, six hundred sixteen thousand, six hundred seventy-seven".