531142897 has 2 divisors, whose sum is σ = 531142898. Its totient is φ = 531142896.

The previous prime is 531142877. The next prime is 531142901. The reversal of 531142897 is 798241135.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 497780721 + 33362176 = 22311^2 + 5776^2 .

It is a cyclic number.

It is not a de Polignac number, because 531142897 - 2¹⁹ = 530618609 is a prime.

It is a super-2 number, since 2×531142897² = 564225554067105218, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (531142867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265571448 + 265571449.

It is an arithmetic number, because the mean of its divisors is an integer number (265571449).

Almost surely, 2^531142897 is an apocalyptic number.

It is an amenable number.

531142897 is a deficient number, since it is larger than the sum of its proper divisors (1).

531142897 is an equidigital number, since it uses as much as digits as its factorization.

531142897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60480, while the sum is 40.

The square root of 531142897 is about 23046.5376358359. The cubic root of 531142897 is about 809.8485196586.

The spelling of 531142897 in words is "five hundred thirty-one million, one hundred forty-two thousand, eight hundred ninety-seven".