31222330002 has 12 divisors (see below), whose sum is σ = 67648381710. Its totient is φ = 10407443328.

The previous prime is 31222329959. The next prime is 31222330021. The reversal of 31222330002 is 20003322213.

It is a happy number.

31222330002 is a `hidden beast` number, since 312 + 22 + 330 + 0 + 0 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 21638115801 + 9584214201 = 147099^2 + 97899^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 1734573889 = 31222330002 / (3 + 1 + 2 + 2 + 2 + 3 + 3 + 0 + 0 + 0 + 2).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 867286927 + ... + 867286962.

Almost surely, 2^31222330002 is an apocalyptic number.

31222330002 is an abundant number, since it is smaller than the sum of its proper divisors (36426051708).

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

31222330002 is a wasteful number, since it uses less digits than its factorization.

31222330002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1734573897 (or 1734573894 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

Adding to 31222330002 its reverse (20003322213), we get a palindrome (51225652215).

It can be divided in two parts, 312223 and 30002, that added together give a square (342225 = 585²).

The spelling of 31222330002 in words is "thirty-one billion, two hundred twenty-two million, three hundred thirty thousand, two".