31443442430 has 16 divisors (see below), whose sum is σ = 57978640944. Its totient is φ = 12270611520.

The previous prime is 31443442417. The next prime is 31443442469. The reversal of 31443442430 is 3424434413.

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, 38345252 + ... + 38346071.

It is an arithmetic number, because the mean of its divisors is an integer number (3623665059).

Almost surely, 2^31443442430 is an apocalyptic number.

31443442430 is a deficient number, since it is larger than the sum of its proper divisors (26535198514).

31443442430 is a wasteful number, since it uses less digits than its factorization.

31443442430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76691371.

The product of its (nonzero) digits is 55296, while the sum is 32.

Adding to 31443442430 its reverse (3424434413), we get a palindrome (34867876843).

The spelling of 31443442430 in words is "thirty-one billion, four hundred forty-three million, four hundred forty-two thousand, four hundred thirty".