1121403311 has 8 divisors (see below), whose sum is σ = 1281980544. Its totient is φ = 960920280.

The previous prime is 1121403287. The next prime is 1121403319. The reversal of 1121403311 is 1133041211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1121403311 - 2³⁰ = 47661487 is a prime.

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 1121403311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121403319) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4136 + ... + 47538.

It is an arithmetic number, because the mean of its divisors is an integer number (160247568).

Almost surely, 2^1121403311 is an apocalyptic number.

1121403311 is a deficient number, since it is larger than the sum of its proper divisors (160577233).

1121403311 is an equidigital number, since it uses as much as digits as its factorization.

1121403311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47101.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 1121403311 is about 33487.3604663013. The cubic root of 1121403311 is about 1038.9323705433.

Adding to 1121403311 its reverse (1133041211), we get a palindrome (2254444522).

Subtracting 1121403311 from its reverse (1133041211), we obtain a triangular number (11637900 = T₄₈₂₄).

The spelling of 1121403311 in words is "one billion, one hundred twenty-one million, four hundred three thousand, three hundred eleven".