23111143213401 has 40 divisors (see below), whose sum is σ = 36557625848040. Its totient is φ = 14500020252672.

The previous prime is 23111143213373. The next prime is 23111143213409. The reversal of 23111143213401 is 10431234111132.

23111143213401 is a `hidden beast` number, since 2 + 3 + 1 + 1 + 1 + 1 + 43 + 213 + 401 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 10665057747600 + 12446085465801 = 3265740^2 + 3527901^2 .

It is not a de Polignac number, because 23111143213401 - 2²² = 23111139019097 is a prime.

It is a super-2 number, since 2×23111143213401² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (23111143213409) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 17906685 + ... + 19153893.

It is an arithmetic number, because the mean of its divisors is an integer number (913940646201).

Almost surely, 2^{23111143213401} is an apocalyptic number.

It is an amenable number.

23111143213401 is a deficient number, since it is larger than the sum of its proper divisors (13446482634639).

23111143213401 is a wasteful number, since it uses less digits than its factorization.

23111143213401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1260695 (or 1260686 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

Adding to 23111143213401 its reverse (10431234111132), we get a palindrome (33542377324533).

The spelling of 23111143213401 in words is "twenty-three trillion, one hundred eleven billion, one hundred forty-three million, two hundred thirteen thousand, four hundred one".