131862529 has 2 divisors, whose sum is σ = 131862530. Its totient is φ = 131862528.

The previous prime is 131862517. The next prime is 131862539. The reversal of 131862529 is 925268131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 112042225 + 19820304 = 10585^2 + 4452^2 .

It is an emirp because it is prime and its reverse (925268131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 131862529 - 2¹¹ = 131860481 is a prime.

It is not a weakly prime, because it can be changed into another prime (131862539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65931264 + 65931265.

It is an arithmetic number, because the mean of its divisors is an integer number (65931265).

Almost surely, 2^131862529 is an apocalyptic number.

It is an amenable number.

131862529 is a deficient number, since it is larger than the sum of its proper divisors (1).

131862529 is an equidigital number, since it uses as much as digits as its factorization.

131862529 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25920, while the sum is 37.

The square root of 131862529 is about 11483.1410772489. The cubic root of 131862529 is about 508.9875196845.

The spelling of 131862529 in words is "one hundred thirty-one million, eight hundred sixty-two thousand, five hundred twenty-nine".