311311120222002 has 32 divisors (see below), whose sum is σ = 655678405324800. Its totient is φ = 98265788815248.

The previous prime is 311311120221977. The next prime is 311311120222031. The reversal of 311311120222002 is 200222021113113.

It is a super-2 number, since 2×311311120222002² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 311311120222002.

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, 596765802 + ... + 597287237.

It is an arithmetic number, because the mean of its divisors is an integer number (20489950166400).

Almost surely, 2^{311311120222002} is an apocalyptic number.

311311120222002 is an abundant number, since it is smaller than the sum of its proper divisors (344367285102798).

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

311311120222002 is a wasteful number, since it uses less digits than its factorization.

311311120222002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1194055350.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 311311120222002 its reverse (200222021113113), we get a palindrome (511533141335115).

The spelling of 311311120222002 in words is "three hundred eleven trillion, three hundred eleven billion, one hundred twenty million, two hundred twenty-two thousand, two".