1331111223 has 96 divisors (see below), whose sum is σ = 2300538240. Its totient is φ = 734469120.

The previous prime is 1331111209. The next prime is 1331111227. The reversal of 1331111223 is 3221111331.

1331111223 is a `hidden beast` number, since 1 + 331 + 111 + 223 = 666.

It is not a de Polignac number, because 1331111223 - 2¹³ = 1331103031 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1331111196 and 1331111205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331111227) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2887213 + ... + 2887673.

It is an arithmetic number, because the mean of its divisors is an integer number (23963940).

Almost surely, 2^1331111223 is an apocalyptic number.

1331111223 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1331111223 is a deficient number, since it is larger than the sum of its proper divisors (969427017).

1331111223 is a wasteful number, since it uses less digits than its factorization.

1331111223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 569 (or 566 counting only the distinct ones).

The product of its digits is 108, while the sum is 18.

The square root of 1331111223 is about 36484.3969800790. The cubic root of 1331111223 is about 1100.0306390915.

Adding to 1331111223 its product of digits (108), we get a palindrome (1331111331).

Adding to 1331111223 its reverse (3221111331), we get a palindrome (4552222554).

The spelling of 1331111223 in words is "one billion, three hundred thirty-one million, one hundred eleven thousand, two hundred twenty-three".