31320103444 has 48 divisors (see below), whose sum is σ = 66597043968. Its totient is φ = 12597032448.

The previous prime is 31320103411. The next prime is 31320103453. The reversal of 31320103444 is 44430102313.

It is a super-2 number, since 2×31320103444² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 424677 + ... + 492940.

It is an arithmetic number, because the mean of its divisors is an integer number (1387438416).

Almost surely, 2^31320103444 is an apocalyptic number.

It is an amenable number.

31320103444 is an abundant number, since it is smaller than the sum of its proper divisors (35276940524).

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

31320103444 is a wasteful number, since it uses less digits than its factorization.

31320103444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 917704 (or 917702 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 31320103444 its reverse (44430102313), we get a palindrome (75750205757).

The spelling of 31320103444 in words is "thirty-one billion, three hundred twenty million, one hundred three thousand, four hundred forty-four".