131541779 has 2 divisors, whose sum is σ = 131541780. Its totient is φ = 131541778.

The previous prime is 131541757. The next prime is 131541811. The reversal of 131541779 is 977145131.

It is a weak prime.

It is an emirp because it is prime and its reverse (977145131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 131541779 - 2²⁴ = 114764563 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (131544779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65770889 + 65770890.

It is an arithmetic number, because the mean of its divisors is an integer number (65770890).

Almost surely, 2^131541779 is an apocalyptic number.

131541779 is a deficient number, since it is larger than the sum of its proper divisors (1).

131541779 is an equidigital number, since it uses as much as digits as its factorization.

131541779 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26460, while the sum is 38.

The square root of 131541779 is about 11469.1664474800. The cubic root of 131541779 is about 508.5744877695.

The spelling of 131541779 in words is "one hundred thirty-one million, five hundred forty-one thousand, seven hundred seventy-nine".