31022220444 has 24 divisors (see below), whose sum is σ = 72388045968. Its totient is φ = 10340330880.

The previous prime is 31022220413. The next prime is 31022220479. The reversal of 31022220444 is 44402222013.

It is a super-2 number, since 2×31022220444² (a number of 22 digits) contains 22 as substring.

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, 517554 + ... + 574374.

It is an arithmetic number, because the mean of its divisors is an integer number (3016168582).

Almost surely, 2^31022220444 is an apocalyptic number.

It is an amenable number.

31022220444 is an abundant number, since it is smaller than the sum of its proper divisors (41365825524).

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

31022220444 is a wasteful number, since it uses less digits than its factorization.

31022220444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102325 (or 102323 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 31022220444 its reverse (44402222013), we get a palindrome (75424442457).

The spelling of 31022220444 in words is "thirty-one billion, twenty-two million, two hundred twenty thousand, four hundred forty-four".