111403423131 has 32 divisors (see below), whose sum is σ = 199435504128. Its totient is φ = 53420221440.

The previous prime is 111403423091. The next prime is 111403423151. The reversal of 111403423131 is 131324304111.

It is a happy number.

It is not a de Polignac number, because 111403423131 - 2⁶ = 111403423067 is a prime.

It is a super-2 number, since 2×111403423131² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (111403423151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18545686 + ... + 18551691.

It is an arithmetic number, because the mean of its divisors is an integer number (6232359504).

Almost surely, 2^111403423131 is an apocalyptic number.

111403423131 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

111403423131 is a deficient number, since it is larger than the sum of its proper divisors (88032080997).

111403423131 is a wasteful number, since it uses less digits than its factorization.

111403423131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37097411.

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 111403423131 its reverse (131324304111), we get a palindrome (242727727242).

The spelling of 111403423131 in words is "one hundred eleven billion, four hundred three million, four hundred twenty-three thousand, one hundred thirty-one".