131166379 has 2 divisors, whose sum is σ = 131166380. Its totient is φ = 131166378.

The previous prime is 131166341. The next prime is 131166461. The reversal of 131166379 is 973661131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 131166379 - 2¹³ = 131158187 is a prime.

It is not a weakly prime, because it can be changed into another prime (131106379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65583189 + 65583190.

It is an arithmetic number, because the mean of its divisors is an integer number (65583190).

Almost surely, 2^131166379 is an apocalyptic number.

131166379 is a deficient number, since it is larger than the sum of its proper divisors (1).

131166379 is an equidigital number, since it uses as much as digits as its factorization.

131166379 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20412, while the sum is 37.

The square root of 131166379 is about 11452.7891362759. The cubic root of 131166379 is about 508.0902290284.

The spelling of 131166379 in words is "one hundred thirty-one million, one hundred sixty-six thousand, three hundred seventy-nine".