57443135231 has 2 divisors, whose sum is σ = 57443135232. Its totient is φ = 57443135230.

The previous prime is 57443135207. The next prime is 57443135263. The reversal of 57443135231 is 13253134475.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57443135231 is a prime.

It is a super-2 number, since 2×57443135231² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57443135291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28721567615 + 28721567616.

It is an arithmetic number, because the mean of its divisors is an integer number (28721567616).

Almost surely, 2^57443135231 is an apocalyptic number.

57443135231 is a deficient number, since it is larger than the sum of its proper divisors (1).

57443135231 is an equidigital number, since it uses as much as digits as its factorization.

57443135231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 151200, while the sum is 38.

The spelling of 57443135231 in words is "fifty-seven billion, four hundred forty-three million, one hundred thirty-five thousand, two hundred thirty-one".