143233987 has 8 divisors (see below), whose sum is σ = 159571440. Its totient is φ = 127656480.

The previous prime is 143233973. The next prime is 143233991. The reversal of 143233987 is 789332341.

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

It is a cyclic number.

It is not a de Polignac number, because 143233987 - 2⁷ = 143233859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (143233907) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 189589 + ... + 190342.

It is an arithmetic number, because the mean of its divisors is an integer number (19946430).

Almost surely, 2^143233987 is an apocalyptic number.

143233987 is a deficient number, since it is larger than the sum of its proper divisors (16337453).

143233987 is a wasteful number, since it uses less digits than its factorization.

143233987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379973.

The product of its digits is 108864, while the sum is 40.

The square root of 143233987 is about 11968.0402322185. The cubic root of 143233987 is about 523.2172176245.

The spelling of 143233987 in words is "one hundred forty-three million, two hundred thirty-three thousand, nine hundred eighty-seven".