143831361 has 8 divisors (see below), whose sum is σ = 191920320. Its totient is φ = 95814992.

The previous prime is 143831357. The next prime is 143831371. The reversal of 143831361 is 163138341.

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 143831361 - 2² = 143831357 is a prime.

It is a super-2 number, since 2×143831361² = 41374920814224642, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (143831371) 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, 13341 + ... + 21578.

It is an arithmetic number, because the mean of its divisors is an integer number (23990040).

Almost surely, 2^143831361 is an apocalyptic number.

It is an amenable number.

143831361 is a deficient number, since it is larger than the sum of its proper divisors (48088959).

143831361 is a wasteful number, since it uses less digits than its factorization.

143831361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36295.

The product of its digits is 5184, while the sum is 30.

The square root of 143831361 is about 11992.9713165670. The cubic root of 143831361 is about 523.9435881718.

The spelling of 143831361 in words is "one hundred forty-three million, eight hundred thirty-one thousand, three hundred sixty-one".