31020440000 has 140 divisors (see below), whose sum is σ = 83914582488. Its totient is φ = 11280000000.

The previous prime is 31020439999. The next prime is 31020440131. The reversal of 31020440000 is 4402013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 404750 + ... + 475250.

Almost surely, 2^31020440000 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 31020440000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41957291244).

31020440000 is an abundant number, since it is smaller than the sum of its proper divisors (52894142488).

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

31020440000 is an equidigital number, since it uses as much as digits as its factorization.

31020440000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70544 (or 70519 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

Adding to 31020440000 its reverse (4402013), we get a palindrome (31024842013).

The spelling of 31020440000 in words is "thirty-one billion, twenty million, four hundred forty thousand".