131976487 has 2 divisors, whose sum is σ = 131976488. Its totient is φ = 131976486.

The previous prime is 131976479. The next prime is 131976539. The reversal of 131976487 is 784679131.

It is a weak prime.

It is an emirp because it is prime and its reverse (784679131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 131976487 - 2³ = 131976479 is a prime.

It is a super-2 number, since 2×131976487² = 34835586241722338, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131976787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65988243 + 65988244.

It is an arithmetic number, because the mean of its divisors is an integer number (65988244).

Almost surely, 2^131976487 is an apocalyptic number.

131976487 is a deficient number, since it is larger than the sum of its proper divisors (1).

131976487 is an equidigital number, since it uses as much as digits as its factorization.

131976487 is an evil number, because the sum of its binary digits is even.

The product of its digits is 254016, while the sum is 46.

The square root of 131976487 is about 11488.1019755223. The cubic root of 131976487 is about 509.1341028953.

The spelling of 131976487 in words is "one hundred thirty-one million, nine hundred seventy-six thousand, four hundred eighty-seven".