31301231001312 has 48 divisors (see below), whose sum is σ = 82166096259072. Its totient is φ = 10433697333120.

The previous prime is 31301231001307. The next prime is 31301231001319. The reversal of 31301231001312 is 21310013210313.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31301231001319) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26190943 + ... + 27359969.

It is an arithmetic number, because the mean of its divisors is an integer number (1711793672064).

Almost surely, 2^{31301231001312} is an apocalyptic number.

31301231001312 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

31301231001312 is an abundant number, since it is smaller than the sum of its proper divisors (50864865257760).

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

31301231001312 is a wasteful number, since it uses less digits than its factorization.

31301231001312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1447951 (or 1447943 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 31301231001312 its reverse (21310013210313), we get a palindrome (52611244211625).

The spelling of 31301231001312 in words is "thirty-one trillion, three hundred one billion, two hundred thirty-one million, one thousand, three hundred twelve".