31021342444 has 12 divisors (see below), whose sum is σ = 55311639264. Its totient is φ = 15218016944.

The previous prime is 31021342423. The next prime is 31021342489. The reversal of 31021342444 is 44424312013.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73163332 + ... + 73163755.

It is an arithmetic number, because the mean of its divisors is an integer number (4609303272).

Almost surely, 2^31021342444 is an apocalyptic number.

It is an amenable number.

31021342444 is a deficient number, since it is larger than the sum of its proper divisors (24290296820).

31021342444 is a wasteful number, since it uses less digits than its factorization.

31021342444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146327144 (or 146327142 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 31021342444 its reverse (44424312013), we get a palindrome (75445654457).

The spelling of 31021342444 in words is "thirty-one billion, twenty-one million, three hundred forty-two thousand, four hundred forty-four".