131479669 has 2 divisors, whose sum is σ = 131479670. Its totient is φ = 131479668.

The previous prime is 131479657. The next prime is 131479693. The reversal of 131479669 is 966974131.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68277169 + 63202500 = 8263^2 + 7950^2 .

It is a cyclic number.

It is not a de Polignac number, because 131479669 - 2⁵ = 131479637 is a prime.

It is a super-2 number, since 2×131479669² = 34573806720699122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131479609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65739834 + 65739835.

It is an arithmetic number, because the mean of its divisors is an integer number (65739835).

Almost surely, 2^131479669 is an apocalyptic number.

It is an amenable number.

131479669 is a deficient number, since it is larger than the sum of its proper divisors (1).

131479669 is an equidigital number, since it uses as much as digits as its factorization.

131479669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 244944, while the sum is 46.

The square root of 131479669 is about 11466.4584331868. The cubic root of 131479669 is about 508.4944307348.

The spelling of 131479669 in words is "one hundred thirty-one million, four hundred seventy-nine thousand, six hundred sixty-nine".