11311400345 has 24 divisors (see below), whose sum is σ = 16476312384. Its totient is φ = 7419150816.

The previous prime is 11311400339. The next prime is 11311400369. The reversal of 11311400345 is 54300411311.

It is a happy number.

It is not a de Polignac number, because 11311400345 - 2¹⁰ = 11311399321 is a prime.

It is a super-2 number, since 2×11311400345² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a self number, because there is not a number n which added to its sum of digits gives 11311400345.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 998039 + ... + 1009308.

It is an arithmetic number, because the mean of its divisors is an integer number (686513016).

Almost surely, 2^11311400345 is an apocalyptic number.

It is an amenable number.

11311400345 is a deficient number, since it is larger than the sum of its proper divisors (5164912039).

11311400345 is a wasteful number, since it uses less digits than its factorization.

11311400345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2007389 (or 2007382 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

Adding to 11311400345 its reverse (54300411311), we get a palindrome (65611811656).

The spelling of 11311400345 in words is "eleven billion, three hundred eleven million, four hundred thousand, three hundred forty-five".