143844481 has 4 divisors (see below), whose sum is σ = 156921264. Its totient is φ = 130767700.

The previous prime is 143844443. The next prime is 143844517. The reversal of 143844481 is 184448341.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 143844481 - 2⁷ = 143844353 is a prime.

It is a super-2 number, since 2×143844481² = 41382469428318722, 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 143844481.

It is not an unprimeable number, because it can be changed into a prime (143844401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6538375 + ... + 6538396.

It is an arithmetic number, because the mean of its divisors is an integer number (39230316).

Almost surely, 2^143844481 is an apocalyptic number.

143844481 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

143844481 is a deficient number, since it is larger than the sum of its proper divisors (13076783).

143844481 is a wasteful number, since it uses less digits than its factorization.

143844481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13076782.

The product of its digits is 49152, while the sum is 37.

The square root of 143844481 is about 11993.5182911438. The cubic root of 143844481 is about 523.9595187052.

The spelling of 143844481 in words is "one hundred forty-three million, eight hundred forty-four thousand, four hundred eighty-one".