31328000000 has 336 divisors, whose sum is σ = 86377800600. Its totient is φ = 11264000000.

The previous prime is 31327999987. The next prime is 31328000047. The reversal of 31328000000 is 82313.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 351999956 + ... + 352000044.

Almost surely, 2^31328000000 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 31328000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43188900300).

31328000000 is an abundant number, since it is smaller than the sum of its proper divisors (55049800600).

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

31328000000 is an frugal number, since it uses more digits than its factorization.

31328000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152 (or 107 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 31328000000 its reverse (82313), we get a palindrome (31328082313).

The spelling of 31328000000 in words is "thirty-one billion, three hundred twenty-eight million", and thus it is an aban number.