2111311401253 has 16 divisors (see below), whose sum is σ = 2237113769904. Its totient is φ = 1985688207360.

The previous prime is 2111311401239. The next prime is 2111311401257. The reversal of 2111311401253 is 3521041131112.

It can be written as a sum of positive squares in 8 ways, for example, as 805594689 + 2110505806564 = 28383^2 + 1452758^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2111311401253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111311401257) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 240985393 + ... + 240994153.

It is an arithmetic number, because the mean of its divisors is an integer number (139819610619).

Almost surely, 2^{2111311401253} is an apocalyptic number.

It is an amenable number.

2111311401253 is a deficient number, since it is larger than the sum of its proper divisors (125802368651).

2111311401253 is a wasteful number, since it uses less digits than its factorization.

2111311401253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17352.

The product of its (nonzero) digits is 720, while the sum is 25.

Adding to 2111311401253 its reverse (3521041131112), we get a palindrome (5632352532365).

The spelling of 2111311401253 in words is "two trillion, one hundred eleven billion, three hundred eleven million, four hundred one thousand, two hundred fifty-three".