2311020202312 has 8 divisors (see below), whose sum is σ = 4333162879350. Its totient is φ = 1155510101152.

The previous prime is 2311020202219. The next prime is 2311020202369. The reversal of 2311020202312 is 2132020201132.

It can be written as a sum of positive squares in only one way, i.e., 1541108719396 + 769911482916 = 1241414^2 + 877446^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 2311020202312.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 144438762637 + ... + 144438762652.

Almost surely, 2^{2311020202312} is an apocalyptic number.

It is an amenable number.

2311020202312 is a deficient number, since it is larger than the sum of its proper divisors (2022142677038).

2311020202312 is a wasteful number, since it uses less digits than its factorization.

2311020202312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288877525295 (or 288877525291 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 2311020202312 its reverse (2132020201132), we get a palindrome (4443040403444).

The spelling of 2311020202312 in words is "two trillion, three hundred eleven billion, twenty million, two hundred two thousand, three hundred twelve".