1131400443 has 8 divisors (see below), whose sum is σ = 1509514000. Its totient is φ = 753776928.

The previous prime is 1131400423. The next prime is 1131400447. The reversal of 1131400443 is 3440041311.

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

It is not a de Polignac number, because 1131400443 - 2⁸ = 1131400187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1131400447) 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, 117088 + ... + 126381.

It is an arithmetic number, because the mean of its divisors is an integer number (188689250).

Almost surely, 2^1131400443 is an apocalyptic number.

1131400443 is a deficient number, since it is larger than the sum of its proper divisors (378113557).

1131400443 is a wasteful number, since it uses less digits than its factorization.

1131400443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245021.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 1131400443 is about 33636.2965113581. The cubic root of 1131400443 is about 1042.0105469980.

Adding to 1131400443 its reverse (3440041311), we get a palindrome (4571441754).

The spelling of 1131400443 in words is "one billion, one hundred thirty-one million, four hundred thousand, four hundred forty-three".