31450221444 has 24 divisors (see below), whose sum is σ = 73391241280. Its totient is φ = 10482351264.

The previous prime is 31450221443. The next prime is 31450221449. The reversal of 31450221444 is 44412205413.

It is not an unprimeable number, because it can be changed into a prime (31450221443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2824 + ... + 250815.

Almost surely, 2^31450221444 is an apocalyptic number.

It is an amenable number.

31450221444 is an abundant number, since it is smaller than the sum of its proper divisors (41941019836).

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

31450221444 is a wasteful number, since it uses less digits than its factorization.

31450221444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263979 (or 263977 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 30.

Adding to 31450221444 its reverse (44412205413), we get a palindrome (75862426857).

The spelling of 31450221444 in words is "thirty-one billion, four hundred fifty million, two hundred twenty-one thousand, four hundred forty-four".