131167999 has 2 divisors, whose sum is σ = 131168000. Its totient is φ = 131167998.

The previous prime is 131167987. The next prime is 131168003. The reversal of 131167999 is 999761131.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131167999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131167909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65583999 + 65584000.

It is an arithmetic number, because the mean of its divisors is an integer number (65584000).

Almost surely, 2^131167999 is an apocalyptic number.

131167999 is a deficient number, since it is larger than the sum of its proper divisors (1).

131167999 is an equidigital number, since it uses as much as digits as its factorization.

131167999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 91854, while the sum is 46.

The square root of 131167999 is about 11452.8598611875. The cubic root of 131167999 is about 508.0923207809.

It can be divided in two parts, 13116 and 7999, that added together give a triangular number (21115 = T₂₀₅).

The spelling of 131167999 in words is "one hundred thirty-one million, one hundred sixty-seven thousand, nine hundred ninety-nine".