111434432431 has 8 divisors (see below), whose sum is σ = 127416481920. Its totient is φ = 95468094168.

The previous prime is 111434432407. The next prime is 111434432477. The reversal of 111434432431 is 134234434111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 111434432431 - 2⁵ = 111434432399 is a prime.

It is a super-2 number, since 2×111434432431² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111434432393 and 111434432402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111434432731) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3912601 + ... + 3940978.

It is an arithmetic number, because the mean of its divisors is an integer number (15927060240).

Almost surely, 2^111434432431 is an apocalyptic number.

111434432431 is a deficient number, since it is larger than the sum of its proper divisors (15982049489).

111434432431 is an equidigital number, since it uses as much as digits as its factorization.

111434432431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7855613.

The product of its digits is 13824, while the sum is 31.

Adding to 111434432431 its reverse (134234434111), we get a palindrome (245668866542).

The spelling of 111434432431 in words is "one hundred eleven billion, four hundred thirty-four million, four hundred thirty-two thousand, four hundred thirty-one".