111331131303 has 16 divisors (see below), whose sum is σ = 169719981056. Its totient is φ = 63590585760.

The previous prime is 111331131277. The next prime is 111331131361. The reversal of 111331131303 is 303131133111.

It is not a de Polignac number, because 111331131303 - 2¹⁶ = 111331065767 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 111331131303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111331130303) 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, 1083151 + ... + 1181472.

It is an arithmetic number, because the mean of its divisors is an integer number (10607498816).

Almost surely, 2^111331131303 is an apocalyptic number.

111331131303 is a deficient number, since it is larger than the sum of its proper divisors (58388849753).

111331131303 is a wasteful number, since it uses less digits than its factorization.

111331131303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2266974.

The product of its (nonzero) digits is 243, while the sum is 21.

Adding to 111331131303 its reverse (303131133111), we get a palindrome (414462264414).

The spelling of 111331131303 in words is "one hundred eleven billion, three hundred thirty-one million, one hundred thirty-one thousand, three hundred three".