31344430420 has 48 divisors (see below), whose sum is σ = 67206283200. Its totient is φ = 12277024256.

The previous prime is 31344430349. The next prime is 31344430457. The reversal of 31344430420 is 2403444313.

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, 104031 + ... + 271129.

It is an arithmetic number, because the mean of its divisors is an integer number (1400130900).

Almost surely, 2^31344430420 is an apocalyptic number.

It is an amenable number.

31344430420 is an abundant number, since it is smaller than the sum of its proper divisors (35861852780).

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

31344430420 is a wasteful number, since it uses less digits than its factorization.

31344430420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167304 (or 167302 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 31344430420 its reverse (2403444313), we get a palindrome (33747874733).

The spelling of 31344430420 in words is "thirty-one billion, three hundred forty-four million, four hundred thirty thousand, four hundred twenty".