30930431 has 4 divisors (see below), whose sum is σ = 35349072. Its totient is φ = 26511792.

The previous prime is 30930397. The next prime is 30930433. The reversal of 30930431 is 13403903.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13403903 = 2377 ⋅5639.

It is a cyclic number.

It is not a de Polignac number, because 30930431 - 2¹⁰ = 30929407 is a prime.

It is a super-2 number, since 2×30930431² = 1913383123691522, 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 = 30930397 and 30930406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30930433) 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, 2209310 + ... + 2209323.

It is an arithmetic number, because the mean of its divisors is an integer number (8837268).

Almost surely, 2^30930431 is an apocalyptic number.

30930431 is a deficient number, since it is larger than the sum of its proper divisors (4418641).

30930431 is an equidigital number, since it uses as much as digits as its factorization.

30930431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4418640.

The product of its (nonzero) digits is 972, while the sum is 23.

The square root of 30930431 is about 5561.5133731746. The cubic root of 30930431 is about 313.9028970709.

The spelling of 30930431 in words is "thirty million, nine hundred thirty thousand, four hundred thirty-one".