31332120000 has 140 divisors (see below), whose sum is σ = 103591696296. Its totient is φ = 8355200000.

The previous prime is 31332119969. The next prime is 31332120007. The reversal of 31332120000 is 2123313.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31332120007) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 10551 + ... + 250550.

Almost surely, 2^31332120000 is an apocalyptic number.

31332120000 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 31332120000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51795848148).

31332120000 is an abundant number, since it is smaller than the sum of its proper divisors (72259576296).

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

31332120000 is an equidigital number, since it uses as much as digits as its factorization.

31332120000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261136 (or 261111 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 15.

Adding to 31332120000 its reverse (2123313), we get a palindrome (31334243313).

The spelling of 31332120000 in words is "thirty-one billion, three hundred thirty-two million, one hundred twenty thousand".