1125451331 has 8 divisors (see below), whose sum is σ = 1149867840. Its totient is φ = 1101054528.

The previous prime is 1125451319. The next prime is 1125451333. The reversal of 1125451331 is 1331545211.

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 1125451331 - 2¹⁰ = 1125450307 is a prime.

It is a super-2 number, since 2×1125451331² = 2533281396899343122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1125451331.

It is not an unprimeable number, because it can be changed into a prime (1125451333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 213455 + ... + 218663.

It is an arithmetic number, because the mean of its divisors is an integer number (143733480).

Almost surely, 2^1125451331 is an apocalyptic number.

1125451331 is a deficient number, since it is larger than the sum of its proper divisors (24416509).

1125451331 is an equidigital number, since it uses as much as digits as its factorization.

1125451331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9853.

The product of its digits is 1800, while the sum is 26.

The square root of 1125451331 is about 33547.7470331467. The cubic root of 1125451331 is about 1040.1809753475.

Adding to 1125451331 its reverse (1331545211), we get a palindrome (2456996542).

The spelling of 1125451331 in words is "one billion, one hundred twenty-five million, four hundred fifty-one thousand, three hundred thirty-one".