31143013213332 has 24 divisors (see below), whose sum is σ = 72667999908000. Its totient is φ = 10380865964896.

The previous prime is 31143013213283. The next prime is 31143013213337. The reversal of 31143013213332 is 23331231034113.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 31143013213332.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31143013213337) 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, 16365582 + ... + 18169157.

It is an arithmetic number, because the mean of its divisors is an integer number (3027833329500).

Almost surely, 2^{31143013213332} is an apocalyptic number.

It is an amenable number.

31143013213332 is an abundant number, since it is smaller than the sum of its proper divisors (41524986694668).

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

31143013213332 is a wasteful number, since it uses less digits than its factorization.

31143013213332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34609895 (or 34609893 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 30.

Adding to 31143013213332 its reverse (23331231034113), we get a palindrome (54474244247445).

The spelling of 31143013213332 in words is "thirty-one trillion, one hundred forty-three billion, thirteen million, two hundred thirteen thousand, three hundred thirty-two".