31311320002 has 8 divisors (see below), whose sum is σ = 46968541200. Its totient is φ = 15655139604.

The previous prime is 31311319993. The next prime is 31311320003. The reversal of 31311320002 is 20002311313.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (31311320003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 180052 + ... + 308287.

It is an arithmetic number, because the mean of its divisors is an integer number (5871067650).

Almost surely, 2^31311320002 is an apocalyptic number.

31311320002 is a deficient number, since it is larger than the sum of its proper divisors (15657221198).

31311320002 is a wasteful number, since it uses less digits than its factorization.

31311320002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520400.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 31311320002 its reverse (20002311313), we get a palindrome (51313631315).

The spelling of 31311320002 in words is "thirty-one billion, three hundred eleven million, three hundred twenty thousand, two".