143391006 has 64 divisors (see below), whose sum is σ = 349251840. Its totient is φ = 43247520.

The previous prime is 143390999. The next prime is 143391037. The reversal of 143391006 is 600193341.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 167676 + ... + 168528.

It is an arithmetic number, because the mean of its divisors is an integer number (5457060).

Almost surely, 2^143391006 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 143391006, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (174625920).

143391006 is an abundant number, since it is smaller than the sum of its proper divisors (205860834).

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

143391006 is a wasteful number, since it uses less digits than its factorization.

143391006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1158 (or 1152 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 143391006 is about 11974.5983648722. The cubic root of 143391006 is about 523.4083385628.

The spelling of 143391006 in words is "one hundred forty-three million, three hundred ninety-one thousand, six".