428567031 has 10 divisors (see below), whose sum is σ = 640205192. Its totient is φ = 285711300.

The previous prime is 428567023. The next prime is 428567039. The reversal of 428567031 is 130765824.

It is an interprime number because it is at equal distance from previous prime (428567023) and next prime (428567039).

It is not a de Polignac number, because 428567031 - 2³ = 428567023 is a prime.

It is a super-2 number, since 2×428567031² = 367339400120309922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428567039) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 2645395 + ... + 2645556.

Almost surely, 2^428567031 is an apocalyptic number.

428567031 is a deficient number, since it is larger than the sum of its proper divisors (211638161).

428567031 is an equidigital number, since it uses as much as digits as its factorization.

428567031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5290963 (or 5290954 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 428567031 is about 20701.8605685576. The cubic root of 428567031 is about 753.9448623688.

The spelling of 428567031 in words is "four hundred twenty-eight million, five hundred sixty-seven thousand, thirty-one".