1143431015 has 8 divisors (see below), whose sum is σ = 1372342608. Its totient is φ = 914594560.

The previous prime is 1143430979. The next prime is 1143431027. The reversal of 1143431015 is 5101343411.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1143431015 - 2²⁶ = 1076322151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23255 + ... + 53175.

It is an arithmetic number, because the mean of its divisors is an integer number (171542826).

Almost surely, 2^1143431015 is an apocalyptic number.

1143431015 is a deficient number, since it is larger than the sum of its proper divisors (228911593).

1143431015 is an equidigital number, since it uses as much as digits as its factorization.

1143431015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37569.

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

The square root of 1143431015 is about 33814.6568073668. The cubic root of 1143431015 is about 1045.6908856673.

Adding to 1143431015 its reverse (5101343411), we get a palindrome (6244774426).

The spelling of 1143431015 in words is "one billion, one hundred forty-three million, four hundred thirty-one thousand, fifteen".