131957533 has 2 divisors, whose sum is σ = 131957534. Its totient is φ = 131957532.

The previous prime is 131957491. The next prime is 131957561. The reversal of 131957533 is 335759131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 96471684 + 35485849 = 9822^2 + 5957^2 .

It is a cyclic number.

It is not a de Polignac number, because 131957533 - 2¹³ = 131949341 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 131957492 and 131957501.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131957563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65978766 + 65978767.

It is an arithmetic number, because the mean of its divisors is an integer number (65978767).

Almost surely, 2^131957533 is an apocalyptic number.

It is an amenable number.

131957533 is a deficient number, since it is larger than the sum of its proper divisors (1).

131957533 is an equidigital number, since it uses as much as digits as its factorization.

131957533 is an evil number, because the sum of its binary digits is even.

The product of its digits is 42525, while the sum is 37.

The square root of 131957533 is about 11487.2770054526. The cubic root of 131957533 is about 509.1097283772.

The spelling of 131957533 in words is "one hundred thirty-one million, nine hundred fifty-seven thousand, five hundred thirty-three".