31303142444 has 12 divisors (see below), whose sum is σ = 62606284944. Its totient is φ = 13415632464.

The previous prime is 31303142407. The next prime is 31303142471. The reversal of 31303142444 is 44424130313.

It is a happy number.

31303142444 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 558984659 + ... + 558984714.

It is an arithmetic number, because the mean of its divisors is an integer number (5217190412).

Almost surely, 2^31303142444 is an apocalyptic number.

It is an amenable number.

31303142444 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

31303142444 is a wasteful number, since it uses less digits than its factorization.

31303142444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1117969384 (or 1117969382 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 31303142444 its reverse (44424130313), we get a palindrome (75727272757).

The spelling of 31303142444 in words is "thirty-one billion, three hundred three million, one hundred forty-two thousand, four hundred forty-four".