1131451043 has 8 divisors (see below), whose sum is σ = 1149254400. Its totient is φ = 1113674760.

The previous prime is 1131450977. The next prime is 1131451073. The reversal of 1131451043 is 3401541311.

It is a happy number.

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 1131451043 - 2¹⁸ = 1131188899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1131451073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87698 + ... + 99768.

It is an arithmetic number, because the mean of its divisors is an integer number (143656800).

Almost surely, 2^1131451043 is an apocalyptic number.

1131451043 is a deficient number, since it is larger than the sum of its proper divisors (17803357).

1131451043 is a wasteful number, since it uses less digits than its factorization.

1131451043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13537.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 1131451043 is about 33637.0486666116. The cubic root of 1131451043 is about 1042.0260808284.

Adding to 1131451043 its reverse (3401541311), we get a palindrome (4532992354).

The spelling of 1131451043 in words is "one billion, one hundred thirty-one million, four hundred fifty-one thousand, forty-three".