424557431 has 4 divisors (see below), whose sum is σ = 438252864. Its totient is φ = 410862000.

The previous prime is 424557421. The next prime is 424557433. The reversal of 424557431 is 134755424.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-424557431 is a prime.

It is a super-2 number, since 2×424557431² = 360498024434639522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 424557391 and 424557400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (424557433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6847670 + ... + 6847731.

It is an arithmetic number, because the mean of its divisors is an integer number (109563216).

Almost surely, 2^424557431 is an apocalyptic number.

424557431 is a deficient number, since it is larger than the sum of its proper divisors (13695433).

424557431 is a wasteful number, since it uses less digits than its factorization.

424557431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13695432.

The product of its digits is 67200, while the sum is 35.

The square root of 424557431 is about 20604.7914573286. The cubic root of 424557431 is about 751.5862315350.

The spelling of 424557431 in words is "four hundred twenty-four million, five hundred fifty-seven thousand, four hundred thirty-one".