31321043434032 has 40 divisors (see below), whose sum is σ = 88268395133760. Its totient is φ = 9491225282880.

The previous prime is 31321043434019. The next prime is 31321043434049. The reversal of 31321043434032 is 23043434012313.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 31321043433984 and 31321043434002.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29660078482 + ... + 29660079537.

It is an arithmetic number, because the mean of its divisors is an integer number (2206709878344).

Almost surely, 2^{31321043434032} is an apocalyptic number.

It is an amenable number.

31321043434032 is an abundant number, since it is smaller than the sum of its proper divisors (56947351699728).

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

31321043434032 is a wasteful number, since it uses less digits than its factorization.

31321043434032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59320158041 (or 59320158035 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 33.

Adding to 31321043434032 its reverse (23043434012313), we get a palindrome (54364477446345).

The spelling of 31321043434032 in words is "thirty-one trillion, three hundred twenty-one billion, forty-three million, four hundred thirty-four thousand, thirty-two".