31012421231300 has 72 divisors (see below), whose sum is σ = 68230887834312. Its totient is φ = 12232874880000.

The previous prime is 31012421231299. The next prime is 31012421231303. The reversal of 31012421231300 is 313212421013.

It can be written as a sum of positive squares in 12 ways, for example, as 7664525806144 + 23347895425156 = 2768488^2 + 4831966^2 .

It is not an unprimeable number, because it can be changed into a prime (31012421231303) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41244710 + ... + 41989890.

It is an arithmetic number, because the mean of its divisors is an integer number (947651219921).

Almost surely, 2^{31012421231300} 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 31012421231300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34115443917156).

31012421231300 is an abundant number, since it is smaller than the sum of its proper divisors (37218466603012).

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

31012421231300 is a wasteful number, since it uses less digits than its factorization.

31012421231300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 750969 (or 750962 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 31012421231300 its reverse (313212421013), we get a palindrome (31325633652313).

The spelling of 31012421231300 in words is "thirty-one trillion, twelve billion, four hundred twenty-one million, two hundred thirty-one thousand, three hundred".