131559433 has 2 divisors, whose sum is σ = 131559434. Its totient is φ = 131559432.

The previous prime is 131559377. The next prime is 131559437. The reversal of 131559433 is 334955131.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 83229129 + 48330304 = 9123^2 + 6952^2 .

It is a cyclic number.

It is not a de Polignac number, because 131559433 - 2¹⁷ = 131428361 is a prime.

It is a super-2 number, since 2×131559433² = 34615768822562978, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (131559437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65779716 + 65779717.

It is an arithmetic number, because the mean of its divisors is an integer number (65779717).

Almost surely, 2^131559433 is an apocalyptic number.

It is an amenable number.

131559433 is a deficient number, since it is larger than the sum of its proper divisors (1).

131559433 is an equidigital number, since it uses as much as digits as its factorization.

131559433 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24300, while the sum is 34.

The square root of 131559433 is about 11469.9360503884. The cubic root of 131559433 is about 508.5972383928.

The spelling of 131559433 in words is "one hundred thirty-one million, five hundred fifty-nine thousand, four hundred thirty-three".