31233220112130 has 128 divisors (see below), whose sum is σ = 80945663904000. Its totient is φ = 7683979689984.

The previous prime is 31233220112099. The next prime is 31233220112141. The reversal of 31233220112130 is 3121102233213.

It is a self number, because there is not a number n which added to its sum of digits gives 31233220112130.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9014314 + ... + 11988506.

It is an arithmetic number, because the mean of its divisors is an integer number (632387999250).

Almost surely, 2^{31233220112130} is an apocalyptic number.

31233220112130 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 31233220112130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40472831952000).

31233220112130 is an abundant number, since it is smaller than the sum of its proper divisors (49712443791870).

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

31233220112130 is a wasteful number, since it uses less digits than its factorization.

31233220112130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2974628.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 31233220112130 its reverse (3121102233213), we get a palindrome (34354322345343).

The spelling of 31233220112130 in words is "thirty-one trillion, two hundred thirty-three billion, two hundred twenty million, one hundred twelve thousand, one hundred thirty".