30830331 has 16 divisors (see below), whose sum is σ = 49452800. Its totient is φ = 16689888.

The previous prime is 30830321. The next prime is 30830389. The reversal of 30830331 is 13303803.

It is not a de Polignac number, because 30830331 - 2⁷ = 30830203 is a prime.

It is a super-2 number, since 2×30830331² = 1901018619139122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30830298 and 30830307.

It is not an unprimeable number, because it can be changed into a prime (30830321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38236 + ... + 39033.

It is an arithmetic number, because the mean of its divisors is an integer number (3090800).

Almost surely, 2^30830331 is an apocalyptic number.

30830331 is a deficient number, since it is larger than the sum of its proper divisors (18622469).

30830331 is a wasteful number, since it uses less digits than its factorization.

30830331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77298.

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 30830331 is about 5552.5067311981. The cubic root of 30830331 is about 313.5639036518.

The spelling of 30830331 in words is "thirty million, eight hundred thirty thousand, three hundred thirty-one".