1143431016 has 384 divisors, whose sum is σ = 3946475520. Its totient is φ = 268849152.

The previous prime is 1143430979. The next prime is 1143431027. The reversal of 1143431016 is 6101343411.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 11101221 + ... + 11101323.

It is an arithmetic number, because the mean of its divisors is an integer number (10277280).

Almost surely, 2^1143431016 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1143431016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1973237760).

1143431016 is an abundant number, since it is smaller than the sum of its proper divisors (2803044504).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1143431016 is a wasteful number, since it uses less digits than its factorization.

1143431016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185 (or 168 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 1143431016 is about 33814.6568221533. The cubic root of 1143431016 is about 1045.6908859722.

Adding to 1143431016 its reverse (6101343411), we get a palindrome (7244774427).

The spelling of 1143431016 in words is "one billion, one hundred forty-three million, four hundred thirty-one thousand, sixteen".