30825431 has 24 divisors (see below), whose sum is σ = 38790144. Its totient is φ = 23980320.

The previous prime is 30825413. The next prime is 30825449. The reversal of 30825431 is 13452803.

It is an interprime number because it is at equal distance from previous prime (30825413) and next prime (30825449).

It is not a de Polignac number, because 30825431 - 2¹⁰ = 30824407 is a prime.

It is a super-2 number, since 2×30825431² = 1900414392671522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30825431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30825401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 83810 + ... + 84176.

It is an arithmetic number, because the mean of its divisors is an integer number (1616256).

Almost surely, 2^30825431 is an apocalyptic number.

30825431 is a deficient number, since it is larger than the sum of its proper divisors (7964713).

30825431 is a wasteful number, since it uses less digits than its factorization.

30825431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471 (or 458 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 30825431 is about 5552.0654715160. The cubic root of 30825431 is about 313.5472907419.

The spelling of 30825431 in words is "thirty million, eight hundred twenty-five thousand, four hundred thirty-one".