1143155235 has 64 divisors (see below), whose sum is σ = 1985034240. Its totient is φ = 561427200.

The previous prime is 1143155203. The next prime is 1143155239. The reversal of 1143155235 is 5325513411.

It is not a de Polignac number, because 1143155235 - 2⁵ = 1143155203 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143155239) 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 63 ways as a sum of consecutive naturals, for example, 4218150 + ... + 4218420.

It is an arithmetic number, because the mean of its divisors is an integer number (31016160).

Almost surely, 2^1143155235 is an apocalyptic number.

1143155235 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1143155235 is a deficient number, since it is larger than the sum of its proper divisors (841879005).

1143155235 is an equidigital number, since it uses as much as digits as its factorization.

1143155235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377 (or 339 counting only the distinct ones).

The product of its digits is 9000, while the sum is 30.

The square root of 1143155235 is about 33810.5787439375. The cubic root of 1143155235 is about 1045.6068101040.

Adding to 1143155235 its reverse (5325513411), we get a palindrome (6468668646).

It can be divided in two parts, 11431 and 55235, that added together give a palindrome (66666).

The spelling of 1143155235 in words is "one billion, one hundred forty-three million, one hundred fifty-five thousand, two hundred thirty-five".