31244223040 has 112 divisors (see below), whose sum is σ = 77714490240. Its totient is φ = 11942092800.

The previous prime is 31244223019. The next prime is 31244223083. The reversal of 31244223040 is 4032244213.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 31244222996 and 31244223014.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10957615 + ... + 10960465.

Almost surely, 2^31244223040 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31244223040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38857245120).

31244223040 is an abundant number, since it is smaller than the sum of its proper divisors (46470267200).

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

31244223040 is a wasteful number, since it uses less digits than its factorization.

31244223040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4380 (or 4370 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 31244223040 its reverse (4032244213), we get a palindrome (35276467253).

The spelling of 31244223040 in words is "thirty-one billion, two hundred forty-four million, two hundred twenty-three thousand, forty".