131121959 has 2 divisors, whose sum is σ = 131121960. Its totient is φ = 131121958.

The previous prime is 131121953. The next prime is 131121967. The reversal of 131121959 is 959121131.

It is a weak prime.

It is an emirp because it is prime and its reverse (959121131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 131121959 - 2²⁴ = 114344743 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131121953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65560979 + 65560980.

It is an arithmetic number, because the mean of its divisors is an integer number (65560980).

Almost surely, 2^131121959 is an apocalyptic number.

131121959 is a deficient number, since it is larger than the sum of its proper divisors (1).

131121959 is an equidigital number, since it uses as much as digits as its factorization.

131121959 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2430, while the sum is 32.

The square root of 131121959 is about 11450.8497064628. The cubic root of 131121959 is about 508.0328669809.

The spelling of 131121959 in words is "one hundred thirty-one million, one hundred twenty-one thousand, nine hundred fifty-nine".