220031322312 has 64 divisors (see below), whose sum is σ = 564301946880. Its totient is φ = 71461288512.

The previous prime is 220031322281. The next prime is 220031322317. The reversal of 220031322312 is 213223130022.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (220031322317) 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, 185818 + ... + 688905.

It is an arithmetic number, because the mean of its divisors is an integer number (8817217920).

Almost surely, 2^220031322312 is an apocalyptic number.

It is an amenable number.

220031322312 is an abundant number, since it is smaller than the sum of its proper divisors (344270624568).

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

220031322312 is a wasteful number, since it uses less digits than its factorization.

220031322312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 875002 (or 874998 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 220031322312 its reverse (213223130022), we get a palindrome (433254452334).

The spelling of 220031322312 in words is "two hundred twenty billion, thirty-one million, three hundred twenty-two thousand, three hundred twelve".