2040402311 has 4 divisors (see below), whose sum is σ = 2043056400. Its totient is φ = 2037748224.

The previous prime is 2040402281. The next prime is 2040402313. The reversal of 2040402311 is 1132040402.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2040402311 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2040402311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2040402313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1325891 + ... + 1327428.

It is an arithmetic number, because the mean of its divisors is an integer number (510764100).

Almost surely, 2^2040402311 is an apocalyptic number.

2040402311 is a deficient number, since it is larger than the sum of its proper divisors (2654089).

2040402311 is an equidigital number, since it uses as much as digits as its factorization.

2040402311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2654088.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 2040402311 is about 45170.8126006163. The cubic root of 2040402311 is about 1268.3485076586.

Adding to 2040402311 its reverse (1132040402), we get a palindrome (3172442713).

The spelling of 2040402311 in words is "two billion, forty million, four hundred two thousand, three hundred eleven".