31230430 has 32 divisors (see below), whose sum is σ = 70087680. Its totient is φ = 9733920.

The previous prime is 31230421. The next prime is 31230431. The reversal of 31230430 is 3403213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31230431) 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, 19510 + ... + 21049.

It is an arithmetic number, because the mean of its divisors is an integer number (2190240).

Almost surely, 2^31230430 is an apocalyptic number.

31230430 is an abundant number, since it is smaller than the sum of its proper divisors (38857250).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31230430 is a wasteful number, since it uses less digits than its factorization.

31230430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40584.

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

The square root of 31230430 is about 5588.4192756092. The cubic root of 31230430 is about 314.9144976638.

Adding to 31230430 its reverse (3403213), we get a palindrome (34633643).

The spelling of 31230430 in words is "thirty-one million, two hundred thirty thousand, four hundred thirty".