11423053431 has 40 divisors (see below), whose sum is σ = 18098064864. Its totient is φ = 7164780480.

The previous prime is 11423053429. The next prime is 11423053487. The reversal of 11423053431 is 13435032411.

It is a happy number.

11423053431 is a `hidden beast` number, since 1 + 14 + 2 + 305 + 343 + 1 = 666.

It is not a de Polignac number, because 11423053431 - 2¹ = 11423053429 is a prime.

It is a super-2 number, since 2×11423053431² (a number of 21 digits) contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 11423053395 and 11423053404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11423053231) 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, 63385 + ... + 163901.

Almost surely, 2^11423053431 is an apocalyptic number.

11423053431 is a deficient number, since it is larger than the sum of its proper divisors (6675011433).

11423053431 is a wasteful number, since it uses less digits than its factorization.

11423053431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100613 (or 100604 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

Adding to 11423053431 its reverse (13435032411), we get a palindrome (24858085842).

The spelling of 11423053431 in words is "eleven billion, four hundred twenty-three million, fifty-three thousand, four hundred thirty-one".