111001343431 has 16 divisors (see below), whose sum is σ = 122974132608. Its totient is φ = 99353757600.

The previous prime is 111001343429. The next prime is 111001343437. The reversal of 111001343431 is 134343100111.

It is a cyclic number.

It is not a de Polignac number, because 111001343431 - 2¹ = 111001343429 is a prime.

It is a super-2 number, since 2×111001343431² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111001343437) 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, 97440 + ... + 481141.

It is an arithmetic number, because the mean of its divisors is an integer number (7685883288).

Almost surely, 2^111001343431 is an apocalyptic number.

111001343431 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

111001343431 is a deficient number, since it is larger than the sum of its proper divisors (11972789177).

111001343431 is a wasteful number, since it uses less digits than its factorization.

111001343431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 578862.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 111001343431 its reverse (134343100111), we get a palindrome (245344443542).

It can be divided in two parts, 11100 and 1343431, that added together give a palindrome (1354531).

The spelling of 111001343431 in words is "one hundred eleven billion, one million, three hundred forty-three thousand, four hundred thirty-one".