31430230 has 16 divisors (see below), whose sum is σ = 60926544. Its totient is φ = 11604960.

The previous prime is 31430227. The next prime is 31430251. The reversal of 31430230 is 3203413.

It is a congruent number.

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, 120756 + ... + 121015.

It is an arithmetic number, because the mean of its divisors is an integer number (3807909).

Almost surely, 2^31430230 is an apocalyptic number.

31430230 is a deficient number, since it is larger than the sum of its proper divisors (29496314).

31430230 is a wasteful number, since it uses less digits than its factorization.

31430230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241791.

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 31430230 is about 5606.2670289596. The cubic root of 31430230 is about 315.5846369324.

Adding to 31430230 its reverse (3203413), we get a palindrome (34633643).

The spelling of 31430230 in words is "thirty-one million, four hundred thirty thousand, two hundred thirty".