431144257 has 8 divisors (see below), whose sum is σ = 454829760. Its totient is φ = 407558160.

The previous prime is 431144227. The next prime is 431144267. The reversal of 431144257 is 752441134.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-431144257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (431144227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15853 + ... + 33370.

It is an arithmetic number, because the mean of its divisors is an integer number (56853720).

Almost surely, 2^431144257 is an apocalyptic number.

It is an amenable number.

431144257 is a deficient number, since it is larger than the sum of its proper divisors (23685503).

431144257 is a wasteful number, since it uses less digits than its factorization.

431144257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49703.

The product of its digits is 13440, while the sum is 31.

The square root of 431144257 is about 20764.0135089534. The cubic root of 431144257 is about 755.4531478474.

The spelling of 431144257 in words is "four hundred thirty-one million, one hundred forty-four thousand, two hundred fifty-seven".