31200012134322 has 32 divisors (see below), whose sum is σ = 62821708572672. Its totient is φ = 10329818628624.

The previous prime is 31200012134321. The next prime is 31200012134329. The reversal of 31200012134322 is 22343121000213.

It is a junction number, because it is equal to n+sod(n) for n = 31200012134292 and 31200012134301.

It is not an unprimeable number, because it can be changed into a prime (31200012134321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10602298 + ... + 13221525.

It is an arithmetic number, because the mean of its divisors is an integer number (1963178392896).

Almost surely, 2^{31200012134322} is an apocalyptic number.

31200012134322 is an abundant number, since it is smaller than the sum of its proper divisors (31621696438350).

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

31200012134322 is a wasteful number, since it uses less digits than its factorization.

31200012134322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23825302.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 31200012134322 its reverse (22343121000213), we get a palindrome (53543133134535).

The spelling of 31200012134322 in words is "thirty-one trillion, two hundred billion, twelve million, one hundred thirty-four thousand, three hundred twenty-two".