31223102002 has 32 divisors (see below), whose sum is σ = 51626574720. Its totient is φ = 14096396160.

The previous prime is 31223101961. The next prime is 31223102033. The reversal of 31223102002 is 20020132213.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 182028 + ... + 309160.

It is an arithmetic number, because the mean of its divisors is an integer number (1613330460).

Almost surely, 2^31223102002 is an apocalyptic number.

31223102002 is a deficient number, since it is larger than the sum of its proper divisors (20403472718).

31223102002 is a wasteful number, since it uses less digits than its factorization.

31223102002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127458.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 31223102002 its reverse (20020132213), we get a palindrome (51243234215).

It can be divided in two parts, 31223 and 102002, that added together give a square (133225 = 365²).

The spelling of 31223102002 in words is "thirty-one billion, two hundred twenty-three million, one hundred two thousand, two".