31330200000 has 672 divisors, whose sum is σ = 116578538496. Its totient is φ = 7360000000.

The previous prime is 31330199983. The next prime is 31330200019. The reversal of 31330200000 is 203313.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 310199950 + ... + 310200050.

It is an arithmetic number, because the mean of its divisors is an integer number (173479968).

Almost surely, 2^31330200000 is an apocalyptic number.

31330200000 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 31330200000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58289269248).

31330200000 is an abundant number, since it is smaller than the sum of its proper divisors (85248338496).

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

31330200000 is a wasteful number, since it uses less digits than its factorization.

31330200000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199 (or 169 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 12.

Adding to 31330200000 its reverse (203313), we get a palindrome (31330403313).

The spelling of 31330200000 in words is "thirty-one billion, three hundred thirty million, two hundred thousand".