111204122440431 has 32 divisors (see below), whose sum is σ = 153599365440000. Its totient is φ = 71479636195968.

The previous prime is 111204122440423. The next prime is 111204122440447. The reversal of 111204122440431 is 134044221402111.

It is not a de Polignac number, because 111204122440431 - 2³ = 111204122440423 is a prime.

It is a super-2 number, since 2×111204122440431² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111204122440471) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1845405780 + ... + 1845466038.

It is an arithmetic number, because the mean of its divisors is an integer number (4799980170000).

Almost surely, 2^{111204122440431} is an apocalyptic number.

111204122440431 is a deficient number, since it is larger than the sum of its proper divisors (42395242999569).

111204122440431 is a wasteful number, since it uses less digits than its factorization.

111204122440431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89583.

The product of its (nonzero) digits is 6144, while the sum is 30.

Adding to 111204122440431 its reverse (134044221402111), we get a palindrome (245248343842542).

The spelling of 111204122440431 in words is "one hundred eleven trillion, two hundred four billion, one hundred twenty-two million, four hundred forty thousand, four hundred thirty-one".