31212321322 has 16 divisors (see below), whose sum is σ = 57622747392. Its totient is φ = 12347731440.

The previous prime is 31212321313. The next prime is 31212321337. The reversal of 31212321322 is 22312321213.

It is a junction number, because it is equal to n+sod(n) for n = 31212321293 and 31212321302.

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, 85747954 + ... + 85748317.

It is an arithmetic number, because the mean of its divisors is an integer number (3601421712).

Almost surely, 2^31212321322 is an apocalyptic number.

31212321322 is a deficient number, since it is larger than the sum of its proper divisors (26410426070).

31212321322 is a wasteful number, since it uses less digits than its factorization.

31212321322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171496293.

The product of its digits is 864, while the sum is 22.

Adding to 31212321322 its reverse (22312321213), we get a palindrome (53524642535).

The spelling of 31212321322 in words is "thirty-one billion, two hundred twelve million, three hundred twenty-one thousand, three hundred twenty-two".