131365433 has 2 divisors, whose sum is σ = 131365434. Its totient is φ = 131365432.

The previous prime is 131365417. The next prime is 131365439. The reversal of 131365433 is 334563131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 100540729 + 30824704 = 10027^2 + 5552^2 .

It is a cyclic number.

It is not a de Polignac number, because 131365433 - 2⁴ = 131365417 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 131365396 and 131365405.

It is not a weakly prime, because it can be changed into another prime (131365439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65682716 + 65682717.

It is an arithmetic number, because the mean of its divisors is an integer number (65682717).

Almost surely, 2^131365433 is an apocalyptic number.

It is an amenable number.

131365433 is a deficient number, since it is larger than the sum of its proper divisors (1).

131365433 is an equidigital number, since it uses as much as digits as its factorization.

131365433 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9720, while the sum is 29.

The square root of 131365433 is about 11461.4760393241. The cubic root of 131365433 is about 508.3471197432.

The spelling of 131365433 in words is "one hundred thirty-one million, three hundred sixty-five thousand, four hundred thirty-three".