111313423431 has 36 divisors (see below), whose sum is σ = 187463218800. Its totient is φ = 63462667968.

The previous prime is 111313423421. The next prime is 111313423439. The reversal of 111313423431 is 134324313111.

111313423431 is a `hidden beast` number, since 1 + 1 + 1 + 313 + 4 + 2 + 343 + 1 = 666.

It is not a de Polignac number, because 111313423431 - 2²¹ = 111311326279 is a prime.

It is a super-2 number, since 2×111313423431² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111313423395 and 111313423404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111313423439) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 93886 + ... + 481083.

Almost surely, 2^111313423431 is an apocalyptic number.

111313423431 is a deficient number, since it is larger than the sum of its proper divisors (76149795369).

111313423431 is a wasteful number, since it uses less digits than its factorization.

111313423431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 575428 (or 575418 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

Adding to 111313423431 its reverse (134324313111), we get a palindrome (245637736542).

The spelling of 111313423431 in words is "one hundred eleven billion, three hundred thirteen million, four hundred twenty-three thousand, four hundred thirty-one".