111214435431 has 16 divisors (see below), whose sum is σ = 163715448960. Its totient is φ = 66590605920.

The previous prime is 111214435379. The next prime is 111214435433. The reversal of 111214435431 is 134534412111.

It is a happy number.

It is not a de Polignac number, because 111214435431 - 2⁷ = 111214435303 is a prime.

It is a super-2 number, since 2×111214435431² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111214435433) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20299276 + ... + 20304753.

It is an arithmetic number, because the mean of its divisors is an integer number (10232215560).

Almost surely, 2^111214435431 is an apocalyptic number.

111214435431 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

111214435431 is a deficient number, since it is larger than the sum of its proper divisors (52501013529).

111214435431 is a wasteful number, since it uses less digits than its factorization.

111214435431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40604126.

The product of its digits is 5760, while the sum is 30.

Adding to 111214435431 its reverse (134534412111), we get a palindrome (245748847542).

It can be divided in two parts, 111214 and 435431, that added together give a palindrome (546645).

The spelling of 111214435431 in words is "one hundred eleven billion, two hundred fourteen million, four hundred thirty-five thousand, four hundred thirty-one".