30531404 has 24 divisors (see below), whose sum is σ = 58060800. Its totient is φ = 13994640.

The previous prime is 30531353. The next prime is 30531421. The reversal of 30531404 is 40413503.

It is a super-2 number, since 2×30531404² = 1864333260422432, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4124 + ... + 8835.

It is an arithmetic number, because the mean of its divisors is an integer number (2419200).

Almost surely, 2^30531404 is an apocalyptic number.

It is an amenable number.

30531404 is a deficient number, since it is larger than the sum of its proper divisors (27529396).

30531404 is a wasteful number, since it uses less digits than its factorization.

30531404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13013 (or 13011 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 30531404 is about 5525.5229616752. The cubic root of 30531404 is about 312.5471851950.

Adding to 30531404 its reverse (40413503), we get a palindrome (70944907).

The spelling of 30531404 in words is "thirty million, five hundred thirty-one thousand, four hundred four".