231421444430 has 32 divisors (see below), whose sum is σ = 458926868448. Its totient is φ = 83320048000.

The previous prime is 231421444357. The next prime is 231421444433. The reversal of 231421444430 is 34444124132.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231421444433) 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, 10403897 + ... + 10426116.

It is an arithmetic number, because the mean of its divisors is an integer number (14341464639).

Almost surely, 2^231421444430 is an apocalyptic number.

231421444430 is a deficient number, since it is larger than the sum of its proper divisors (227505424018).

231421444430 is a wasteful number, since it uses less digits than its factorization.

231421444430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20830132.

The product of its (nonzero) digits is 36864, while the sum is 32.

Adding to 231421444430 its reverse (34444124132), we get a palindrome (265865568562).

The spelling of 231421444430 in words is "two hundred thirty-one billion, four hundred twenty-one million, four hundred forty-four thousand, four hundred thirty".