31230244430 has 32 divisors (see below), whose sum is σ = 70085537280. Its totient is φ = 9734101920.

The previous prime is 31230244429. The next prime is 31230244453. The reversal of 31230244430 is 3444203213.

It is a self number, because there is not a number n which added to its sum of digits gives 31230244430.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20278610 + ... + 20280149.

It is an arithmetic number, because the mean of its divisors is an integer number (2190173040).

Almost surely, 2^31230244430 is an apocalyptic number.

31230244430 is an abundant number, since it is smaller than the sum of its proper divisors (38855292850).

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

31230244430 is a wasteful number, since it uses less digits than its factorization.

31230244430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40558784.

The product of its (nonzero) digits is 6912, while the sum is 26.

Adding to 31230244430 its reverse (3444203213), we get a palindrome (34674447643).

The spelling of 31230244430 in words is "thirty-one billion, two hundred thirty million, two hundred forty-four thousand, four hundred thirty".