131862517 has 2 divisors, whose sum is σ = 131862518. Its totient is φ = 131862516.

The previous prime is 131862481. The next prime is 131862529. The reversal of 131862517 is 715268131.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79459396 + 52403121 = 8914^2 + 7239^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131862517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131862617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65931258 + 65931259.

It is an arithmetic number, because the mean of its divisors is an integer number (65931259).

Almost surely, 2^131862517 is an apocalyptic number.

It is an amenable number.

131862517 is a deficient number, since it is larger than the sum of its proper divisors (1).

131862517 is an equidigital number, since it uses as much as digits as its factorization.

131862517 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10080, while the sum is 34.

The square root of 131862517 is about 11483.1405547437. The cubic root of 131862517 is about 508.9875042446.

The spelling of 131862517 in words is "one hundred thirty-one million, eight hundred sixty-two thousand, five hundred seventeen".