431042557 has 16 divisors (see below), whose sum is σ = 479808000. Its totient is φ = 383937840.

The previous prime is 431042543. The next prime is 431042617. The reversal of 431042557 is 755240134.

It is a de Polignac number, because none of the positive numbers 2^k-431042557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431042357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 145194 + ... + 148132.

It is an arithmetic number, because the mean of its divisors is an integer number (29988000).

Almost surely, 2^431042557 is an apocalyptic number.

It is an amenable number.

431042557 is a deficient number, since it is larger than the sum of its proper divisors (48765443).

431042557 is a wasteful number, since it uses less digits than its factorization.

431042557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3216.

The product of its (nonzero) digits is 16800, while the sum is 31.

The square root of 431042557 is about 20761.5644160068. The cubic root of 431042557 is about 755.3937434248.

The spelling of 431042557 in words is "four hundred thirty-one million, forty-two thousand, five hundred fifty-seven".