131333669 has 2 divisors, whose sum is σ = 131333670. Its totient is φ = 131333668.

The previous prime is 131333647. The next prime is 131333711. The reversal of 131333669 is 966333131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99241444 + 32092225 = 9962^2 + 5665^2 .

It is an emirp because it is prime and its reverse (966333131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 131333669 - 2⁸ = 131333413 is a prime.

It is a super-2 number, since 2×131333669² = 34497065226003122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131333569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65666834 + 65666835.

It is an arithmetic number, because the mean of its divisors is an integer number (65666835).

Almost surely, 2^131333669 is an apocalyptic number.

It is an amenable number.

131333669 is a deficient number, since it is larger than the sum of its proper divisors (1).

131333669 is an equidigital number, since it uses as much as digits as its factorization.

131333669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26244, while the sum is 35.

The square root of 131333669 is about 11460.0902701506. The cubic root of 131333669 is about 508.3061438711.

The spelling of 131333669 in words is "one hundred thirty-one million, three hundred thirty-three thousand, six hundred sixty-nine".