1143731312 has 10 divisors (see below), whose sum is σ = 2215979448. Its totient is φ = 571865648.

The previous prime is 1143731299. The next prime is 1143731333. The reversal of 1143731312 is 2131373411.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35741588 + ... + 35741619.

Almost surely, 2^1143731312 is an apocalyptic number.

It is an amenable number.

1143731312 is a deficient number, since it is larger than the sum of its proper divisors (1072248136).

1143731312 is an equidigital number, since it uses as much as digits as its factorization.

1143731312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71483215 (or 71483209 counting only the distinct ones).

The product of its digits is 1512, while the sum is 26.

The square root of 1143731312 is about 33819.0968537009. The cubic root of 1143731312 is about 1045.7824202231.

The spelling of 1143731312 in words is "one billion, one hundred forty-three million, seven hundred thirty-one thousand, three hundred twelve".