143320987 has 8 divisors (see below), whose sum is σ = 148402800. Its totient is φ = 138248544.

The previous prime is 143320963. The next prime is 143321023. The reversal of 143320987 is 789023341.

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 143320987 - 2¹¹ = 143318939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (143320927) 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, 45964 + ... + 48982.

It is an arithmetic number, because the mean of its divisors is an integer number (18550350).

Almost surely, 2^143320987 is an apocalyptic number.

143320987 is a deficient number, since it is larger than the sum of its proper divisors (5081813).

143320987 is a wasteful number, since it uses less digits than its factorization.

143320987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4685.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 143320987 is about 11971.6743607567. The cubic root of 143320987 is about 523.3231298356.

The spelling of 143320987 in words is "one hundred forty-three million, three hundred twenty thousand, nine hundred eighty-seven".