31230120132300 has 144 divisors (see below), whose sum is σ = 94342628685312. Its totient is φ = 7961311987200.

The previous prime is 31230120132283. The next prime is 31230120132307. The reversal of 31230120132300 is 323102103213.

It is not an unprimeable number, because it can be changed into a prime (31230120132307) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10559937 + ... + 13189863.

It is an arithmetic number, because the mean of its divisors is an integer number (655157143648).

Almost surely, 2^{31230120132300} is an apocalyptic number.

31230120132300 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 31230120132300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47171314342656).

31230120132300 is an abundant number, since it is smaller than the sum of its proper divisors (63112508553012).

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

31230120132300 is a wasteful number, since it uses less digits than its factorization.

31230120132300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2631688 (or 2631681 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 31230120132300 its reverse (323102103213), we get a palindrome (31553222235513).

The spelling of 31230120132300 in words is "thirty-one trillion, two hundred thirty billion, one hundred twenty million, one hundred thirty-two thousand, three hundred".