131122969 has 2 divisors, whose sum is σ = 131122970. Its totient is φ = 131122968.

The previous prime is 131122939. The next prime is 131123029. The reversal of 131122969 is 969221131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 123210000 + 7912969 = 11100^2 + 2813^2 .

It is a cyclic number.

It is not a de Polignac number, because 131122969 - 2⁷ = 131122841 is a prime.

It is a super-2 number, since 2×131122969² = 34386465998749922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (131122919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65561484 + 65561485.

It is an arithmetic number, because the mean of its divisors is an integer number (65561485).

Almost surely, 2^131122969 is an apocalyptic number.

It is an amenable number.

131122969 is a deficient number, since it is larger than the sum of its proper divisors (1).

131122969 is an equidigital number, since it uses as much as digits as its factorization.

131122969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5832, while the sum is 34.

The square root of 131122969 is about 11450.8938079086. The cubic root of 131122969 is about 508.0341713947.

The spelling of 131122969 in words is "one hundred thirty-one million, one hundred twenty-two thousand, nine hundred sixty-nine".