143609131 has 8 divisors (see below), whose sum is σ = 148784400. Its totient is φ = 138448800.

The previous prime is 143609107. The next prime is 143609159. The reversal of 143609131 is 131906341.

143609131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 143609131 - 2¹¹ = 143607083 is a prime.

It is a super-2 number, since 2×143609131² = 41247165013150322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 143609131.

It is not an unprimeable number, because it can be changed into a prime (143609831) 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, 18081 + ... + 24781.

It is an arithmetic number, because the mean of its divisors is an integer number (18598050).

Almost surely, 2^143609131 is an apocalyptic number.

143609131 is a deficient number, since it is larger than the sum of its proper divisors (5175269).

143609131 is an equidigital number, since it uses as much as digits as its factorization.

143609131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7469.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 143609131 is about 11983.7027249511. The cubic root of 143609131 is about 523.6736053213.

The spelling of 143609131 in words is "one hundred forty-three million, six hundred nine thousand, one hundred thirty-one".