11311312201 has 4 divisors (see below), whose sum is σ = 12927213952. Its totient is φ = 9695410452.

The previous prime is 11311312141. The next prime is 11311312213. The reversal of 11311312201 is 10221311311.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10221311311 = 21799 ⋅468889.

It is not a de Polignac number, because 11311312201 - 2²⁷ = 11177094473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11311312601) 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, 807950865 + ... + 807950878.

It is an arithmetic number, because the mean of its divisors is an integer number (3231803488).

Almost surely, 2^11311312201 is an apocalyptic number.

It is an amenable number.

11311312201 is a deficient number, since it is larger than the sum of its proper divisors (1615901751).

11311312201 is an equidigital number, since it uses as much as digits as its factorization.

11311312201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1615901750.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 11311312201 its reverse (10221311311), we get a palindrome (21532623512).

The spelling of 11311312201 in words is "eleven billion, three hundred eleven million, three hundred twelve thousand, two hundred one".