1131442403 has 32 divisors (see below), whose sum is σ = 1420927872. Its totient is φ = 877132800.

The previous prime is 1131442399. The next prime is 1131442441. The reversal of 1131442403 is 3042441311.

It is a cyclic number.

It is not a de Polignac number, because 1131442403 - 2² = 1131442399 is a prime.

It is a super-2 number, since 2×1131442403² = 2560323822612828818, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1131442003) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1201913 + ... + 1202853.

It is an arithmetic number, because the mean of its divisors is an integer number (44403996).

Almost surely, 2^1131442403 is an apocalyptic number.

1131442403 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1131442403 is a deficient number, since it is larger than the sum of its proper divisors (289485469).

1131442403 is a wasteful number, since it uses less digits than its factorization.

1131442403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1215.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 1131442403 is about 33636.9202365496. The cubic root of 1131442403 is about 1042.0234284443.

Adding to 1131442403 its reverse (3042441311), we get a palindrome (4173883714).

The spelling of 1131442403 in words is "one billion, one hundred thirty-one million, four hundred forty-two thousand, four hundred three".