111231143601 has 8 divisors (see below), whose sum is σ = 148324301664. Its totient is φ = 74146040640.

The previous prime is 111231143587. The next prime is 111231143603. The reversal of 111231143601 is 106341132111.

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

It is not a de Polignac number, because 111231143601 - 2¹⁸ = 111230881457 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111231143603) 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, 1981480 + ... + 2036841.

It is an arithmetic number, because the mean of its divisors is an integer number (18540537708).

Almost surely, 2^111231143601 is an apocalyptic number.

It is an amenable number.

111231143601 is a deficient number, since it is larger than the sum of its proper divisors (37093158063).

111231143601 is an equidigital number, since it uses as much as digits as its factorization.

111231143601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4027551.

The product of its (nonzero) digits is 432, while the sum is 24.

Adding to 111231143601 its reverse (106341132111), we get a palindrome (217572275712).

The spelling of 111231143601 in words is "one hundred eleven billion, two hundred thirty-one million, one hundred forty-three thousand, six hundred one".