1131403442 has 32 divisors (see below), whose sum is σ = 1917191808. Its totient is φ = 496843776.

The previous prime is 1131403439. The next prime is 1131403451. The reversal of 1131403442 is 2443041311.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110513 + ... + 120315.

It is an arithmetic number, because the mean of its divisors is an integer number (59912244).

Almost surely, 2^1131403442 is an apocalyptic number.

1131403442 is a deficient number, since it is larger than the sum of its proper divisors (785788366).

1131403442 is a wasteful number, since it uses less digits than its factorization.

1131403442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10034.

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

The square root of 1131403442 is about 33636.3410911472. The cubic root of 1131403442 is about 1042.0114676820.

Adding to 1131403442 its reverse (2443041311), we get a palindrome (3574444753).

The spelling of 1131403442 in words is "one billion, one hundred thirty-one million, four hundred three thousand, four hundred forty-two".