1143475231 has 2 divisors, whose sum is σ = 1143475232. Its totient is φ = 1143475230.

The previous prime is 1143475217. The next prime is 1143475241. The reversal of 1143475231 is 1325743411.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1143475231 - 2⁹ = 1143474719 is a prime.

It is a super-2 number, since 2×1143475231² = 2615071207821006722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1143475193 and 1143475202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1143475211) 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 as a sum of consecutive naturals, namely, 571737615 + 571737616.

It is an arithmetic number, because the mean of its divisors is an integer number (571737616).

Almost surely, 2^1143475231 is an apocalyptic number.

1143475231 is a deficient number, since it is larger than the sum of its proper divisors (1).

1143475231 is an equidigital number, since it uses as much as digits as its factorization.

1143475231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10080, while the sum is 31.

The square root of 1143475231 is about 33815.3106003775. The cubic root of 1143475231 is about 1045.7043643036.

The spelling of 1143475231 in words is "one billion, one hundred forty-three million, four hundred seventy-five thousand, two hundred thirty-one".