31231322310132 has 144 divisors (see below), whose sum is σ = 93578871439872. Its totient is φ = 8921954291040.

The previous prime is 31231322310113. The next prime is 31231322310161. The reversal of 31231322310132 is 23101322313213.

31231322310132 is a `hidden beast` number, since 3 + 1 + 2 + 313 + 2 + 2 + 310 + 1 + 32 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 31231322310096 and 31231322310105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 47594707 + ... + 48246437.

It is an arithmetic number, because the mean of its divisors is an integer number (649853273888).

Almost surely, 2^{31231322310132} 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 31231322310132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46789435719936).

31231322310132 is an abundant number, since it is smaller than the sum of its proper divisors (62347549129740).

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

31231322310132 is a wasteful number, since it uses less digits than its factorization.

31231322310132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 658800 (or 658786 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

Adding to 31231322310132 its reverse (23101322313213), we get a palindrome (54332644623345).

The spelling of 31231322310132 in words is "thirty-one trillion, two hundred thirty-one billion, three hundred twenty-two million, three hundred ten thousand, one hundred thirty-two".