1103211723 has 12 divisors (see below), whose sum is σ = 1507707704. Its totient is φ = 717532800.

The previous prime is 1103211709. The next prime is 1103211727. The reversal of 1103211723 is 3271123011.

It is a happy number.

It is not a de Polignac number, because 1103211723 - 2⁵ = 1103211691 is a prime.

It is a super-2 number, since 2×1103211723² = 2434152211529257458, which contains 22 as substring.

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 1103211723.

It is not an unprimeable number, because it can be changed into a prime (1103211727) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 104338 + ... + 114423.

Almost surely, 2^1103211723 is an apocalyptic number.

1103211723 is a deficient number, since it is larger than the sum of its proper divisors (404495981).

1103211723 is an equidigital number, since it uses as much as digits as its factorization.

1103211723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218846 (or 218805 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 21.

The square root of 1103211723 is about 33214.6311585723. The cubic root of 1103211723 is about 1033.2838052455.

Adding to 1103211723 its reverse (3271123011), we get a palindrome (4374334734).

The spelling of 1103211723 in words is "one billion, one hundred three million, two hundred eleven thousand, seven hundred twenty-three".