1153431143 has 2 divisors, whose sum is σ = 1153431144. Its totient is φ = 1153431142.

The previous prime is 1153431131. The next prime is 1153431173. The reversal of 1153431143 is 3411343511.

It is a weak prime.

It is an emirp because it is prime and its reverse (3411343511) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1153431143 - 2²⁸ = 884995687 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1153431173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 576715571 + 576715572.

It is an arithmetic number, because the mean of its divisors is an integer number (576715572).

Almost surely, 2^1153431143 is an apocalyptic number.

1153431143 is a deficient number, since it is larger than the sum of its proper divisors (1).

1153431143 is an equidigital number, since it uses as much as digits as its factorization.

1153431143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2160, while the sum is 26.

The square root of 1153431143 is about 33962.2016806920. The cubic root of 1153431143 is about 1048.7304817126.

Adding to 1153431143 its reverse (3411343511), we get a palindrome (4564774654).

The spelling of 1153431143 in words is "one billion, one hundred fifty-three million, four hundred thirty-one thousand, one hundred forty-three".