31430030 has 8 divisors (see below), whose sum is σ = 56574072. Its totient is φ = 12572008.

The previous prime is 31430027. The next prime is 31430053. The reversal of 31430030 is 3003413.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 31429987 and 31430014.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1571492 + ... + 1571511.

It is an arithmetic number, because the mean of its divisors is an integer number (7071759).

Almost surely, 2^31430030 is an apocalyptic number.

31430030 is a deficient number, since it is larger than the sum of its proper divisors (25144042).

31430030 is a wasteful number, since it uses less digits than its factorization.

31430030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3143010.

The product of its (nonzero) digits is 108, while the sum is 14.

The square root of 31430030 is about 5606.2491917502. The cubic root of 31430030 is about 315.5839675443.

Adding to 31430030 its reverse (3003413), we get a palindrome (34433443).

The spelling of 31430030 in words is "thirty-one million, four hundred thirty thousand, thirty".