1121131403 has 16 divisors (see below), whose sum is σ = 1293343680. Its totient is φ = 951975936.

The previous prime is 1121131331. The next prime is 1121131457. The reversal of 1121131403 is 3041311211.

It is a cyclic number.

It is not a de Polignac number, because 1121131403 - 2¹⁴ = 1121115019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1121131463) 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, 345593 + ... + 348821.

It is an arithmetic number, because the mean of its divisors is an integer number (80833980).

Almost surely, 2^1121131403 is an apocalyptic number.

1121131403 is a deficient number, since it is larger than the sum of its proper divisors (172212277).

1121131403 is a wasteful number, since it uses less digits than its factorization.

1121131403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3686.

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

The square root of 1121131403 is about 33483.3003600302. The cubic root of 1121131403 is about 1038.8483933648.

Adding to 1121131403 its reverse (3041311211), we get a palindrome (4162442614).

The spelling of 1121131403 in words is "one billion, one hundred twenty-one million, one hundred thirty-one thousand, four hundred three".