30984431 has 4 divisors (see below), whose sum is σ = 30995664. Its totient is φ = 30973200.

The previous prime is 30984409. The next prime is 30984439. The reversal of 30984431 is 13448903.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 30984431 - 2⁶ = 30984367 is a prime.

It is a super-2 number, since 2×30984431² = 1920069928787522, 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 (30984439) 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, 1691 + ... + 8051.

It is an arithmetic number, because the mean of its divisors is an integer number (7748916).

Almost surely, 2^30984431 is an apocalyptic number.

30984431 is a deficient number, since it is larger than the sum of its proper divisors (11233).

30984431 is an equidigital number, since it uses as much as digits as its factorization.

30984431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11232.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 30984431 is about 5566.3660497671. The cubic root of 30984431 is about 314.0854670184.

The spelling of 30984431 in words is "thirty million, nine hundred eighty-four thousand, four hundred thirty-one".