1103553311 has 4 divisors (see below), whose sum is σ = 1261203792. Its totient is φ = 945902832.

The previous prime is 1103553299. The next prime is 1103553323. The reversal of 1103553311 is 1133553011.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (1103553299) and next prime (1103553323).

It is not a de Polignac number, because 1103553311 - 2¹⁰ = 1103552287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1103553331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78825230 + ... + 78825243.

It is an arithmetic number, because the mean of its divisors is an integer number (315300948).

Almost surely, 2^1103553311 is an apocalyptic number.

1103553311 is a deficient number, since it is larger than the sum of its proper divisors (157650481).

1103553311 is an equidigital number, since it uses as much as digits as its factorization.

1103553311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157650480.

The product of its (nonzero) digits is 675, while the sum is 23.

The square root of 1103553311 is about 33219.7728920593. The cubic root of 1103553311 is about 1033.3904396351.

It can be divided in two parts, 11035 and 53311, that added together give a palindrome (64346).

The spelling of 1103553311 in words is "one billion, one hundred three million, five hundred fifty-three thousand, three hundred eleven".