131116501 has 2 divisors, whose sum is σ = 131116502. Its totient is φ = 131116500.

The previous prime is 131116477. The next prime is 131116547. The reversal of 131116501 is 105611131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 104346225 + 26770276 = 10215^2 + 5174^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131116501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131116001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65558250 + 65558251.

It is an arithmetic number, because the mean of its divisors is an integer number (65558251).

Almost surely, 2^131116501 is an apocalyptic number.

It is an amenable number.

131116501 is a deficient number, since it is larger than the sum of its proper divisors (1).

131116501 is an equidigital number, since it uses as much as digits as its factorization.

131116501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90, while the sum is 19.

The square root of 131116501 is about 11450.6113810573. The cubic root of 131116501 is about 508.0258178645.

Adding to 131116501 its reverse (105611131), we get a palindrome (236727632).

The spelling of 131116501 in words is "one hundred thirty-one million, one hundred sixteen thousand, five hundred one".