30831404 has 24 divisors (see below), whose sum is σ = 57920688. Its totient is φ = 14307840.

The previous prime is 30831401. The next prime is 30831407. The reversal of 30831404 is 40413803.

It is an interprime number because it is at equal distance from previous prime (30831401) and next prime (30831407).

It is a super-2 number, since 2×30831404² = 1901150945222432, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 30831404.

It is not an unprimeable number, because it can be changed into a prime (30831401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1859 + ... + 8069.

It is an arithmetic number, because the mean of its divisors is an integer number (2413362).

Almost surely, 2^30831404 is an apocalyptic number.

30831404 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

30831404 is a deficient number, since it is larger than the sum of its proper divisors (27089284).

30831404 is a wasteful number, since it uses less digits than its factorization.

30831404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6305 (or 6303 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 30831404 is about 5552.6033533830. The cubic root of 30831404 is about 313.5675413051.

The spelling of 30831404 in words is "thirty million, eight hundred thirty-one thousand, four hundred four".