31422000000 has 224 divisors, whose sum is σ = 104349445560. Its totient is φ = 8377600000.

The previous prime is 31421999981. The next prime is 31422000007. The reversal of 31422000000 is 22413.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a self number, because there is not a number n which added to its sum of digits gives 31422000000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31422000007) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 5997382 + ... + 6002618.

Almost surely, 2^31422000000 is an apocalyptic number.

31422000000 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31422000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52174722780).

31422000000 is an abundant number, since it is smaller than the sum of its proper divisors (72927445560).

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

31422000000 is an frugal number, since it uses more digits than its factorization.

31422000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5284 (or 5247 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

Adding to 31422000000 its reverse (22413), we get a palindrome (31422022413).

The spelling of 31422000000 in words is "thirty-one billion, four hundred twenty-two million", and thus it is an aban number.