131467997 has 2 divisors, whose sum is σ = 131467998. Its totient is φ = 131467996.

The previous prime is 131467979. The next prime is 131468009. The reversal of 131467997 is 799764131.

Together with previous prime (131467979) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 97990201 + 33477796 = 9899^2 + 5786^2 .

It is a cyclic number.

It is not a de Polignac number, because 131467997 - 2²⁶ = 64359133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131467907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65733998 + 65733999.

It is an arithmetic number, because the mean of its divisors is an integer number (65733999).

Almost surely, 2^131467997 is an apocalyptic number.

It is an amenable number.

131467997 is a deficient number, since it is larger than the sum of its proper divisors (1).

131467997 is an equidigital number, since it uses as much as digits as its factorization.

131467997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 285768, while the sum is 47.

The square root of 131467997 is about 11465.9494591595. The cubic root of 131467997 is about 508.4793832305.

The spelling of 131467997 in words is "one hundred thirty-one million, four hundred sixty-seven thousand, nine hundred ninety-seven".