311320002 has 16 divisors (see below), whose sum is σ = 711588672. Its totient is φ = 88948560.

The previous prime is 311319971. The next prime is 311320003. The reversal of 311320002 is 200023113.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 311320002.

It is not an unprimeable number, because it can be changed into a prime (311320003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3706149 + ... + 3706232.

It is an arithmetic number, because the mean of its divisors is an integer number (44474292).

Almost surely, 2^311320002 is an apocalyptic number.

311320002 is an abundant number, since it is smaller than the sum of its proper divisors (400268670).

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

311320002 is a wasteful number, since it uses less digits than its factorization.

311320002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7412393.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 311320002 is about 17644.2625802270. The cubic root of 311320002 is about 677.7491915223.

Adding to 311320002 its reverse (200023113), we get a palindrome (511343115).

It can be divided in two parts, 3113 and 20002, that multiplied together give a palindrome (62266226).

The spelling of 311320002 in words is "three hundred eleven million, three hundred twenty thousand, two".