1125231143 has 2 divisors, whose sum is σ = 1125231144. Its totient is φ = 1125231142.

The previous prime is 1125231097. The next prime is 1125231157. The reversal of 1125231143 is 3411325211.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1125231143 is a prime.

It is a super-2 number, since 2×1125231143² = 2532290250354172898, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1125237143) 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 as a sum of consecutive naturals, namely, 562615571 + 562615572.

It is an arithmetic number, because the mean of its divisors is an integer number (562615572).

Almost surely, 2^1125231143 is an apocalyptic number.

1125231143 is a deficient number, since it is larger than the sum of its proper divisors (1).

1125231143 is an equidigital number, since it uses as much as digits as its factorization.

1125231143 is an odious number, because the sum of its binary digits is odd.

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

The square root of 1125231143 is about 33544.4651619310. The cubic root of 1125231143 is about 1040.1131358060.

Adding to 1125231143 its reverse (3411325211), we get a palindrome (4536556354).

The spelling of 1125231143 in words is "one billion, one hundred twenty-five million, two hundred thirty-one thousand, one hundred forty-three".