31430234 has 16 divisors (see below), whose sum is σ = 51860736. Its totient is φ = 14285260.

The previous prime is 31430227. The next prime is 31430251. The reversal of 31430234 is 43203413.

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, 3242 + ... + 8565.

It is an arithmetic number, because the mean of its divisors is an integer number (3241296).

Almost surely, 2^31430234 is an apocalyptic number.

31430234 is a deficient number, since it is larger than the sum of its proper divisors (20430502).

31430234 is a wasteful number, since it uses less digits than its factorization.

31430234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11842 (or 11820 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 31430234 is about 5606.2673857033. The cubic root of 31430234 is about 315.5846503201.

Adding to 31430234 its reverse (43203413), we get a palindrome (74633647).

The spelling of 31430234 in words is "thirty-one million, four hundred thirty thousand, two hundred thirty-four".