111125401431 has 16 divisors (see below), whose sum is σ = 161642625408. Its totient is φ = 67346362400.

The previous prime is 111125401391. The next prime is 111125401451. The reversal of 111125401431 is 134104521111.

It is a cyclic number.

It is not a de Polignac number, because 111125401431 - 2²⁹ = 110588530519 is a prime.

It is a super-2 number, since 2×111125401431² (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 (111125401451) 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, 1539376 + ... + 1609946.

It is an arithmetic number, because the mean of its divisors is an integer number (10102664088).

Almost surely, 2^111125401431 is an apocalyptic number.

111125401431 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

111125401431 is a deficient number, since it is larger than the sum of its proper divisors (50517223977).

111125401431 is a wasteful number, since it uses less digits than its factorization.

111125401431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118302.

The product of its (nonzero) digits is 480, while the sum is 24.

Adding to 111125401431 its reverse (134104521111), we get a palindrome (245229922542).

The spelling of 111125401431 in words is "one hundred eleven billion, one hundred twenty-five million, four hundred one thousand, four hundred thirty-one".