143313646 has 16 divisors (see below), whose sum is σ = 245882880. Its totient is φ = 61369560.

The previous prime is 143313641. The next prime is 143313661. The reversal of 143313646 is 646313341.

It is a happy number.

143313646 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×143313646² = 41077602259626632, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143313641) 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, 17115 + ... + 24073.

It is an arithmetic number, because the mean of its divisors is an integer number (15367680).

Almost surely, 2^143313646 is an apocalyptic number.

143313646 is a deficient number, since it is larger than the sum of its proper divisors (102569234).

143313646 is a wasteful number, since it uses less digits than its factorization.

143313646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8439.

The product of its digits is 15552, while the sum is 31.

The square root of 143313646 is about 11971.3677581135. The cubic root of 143313646 is about 523.3141946923.

Adding to 143313646 its reverse (646313341), we get a palindrome (789626987).

The spelling of 143313646 in words is "one hundred forty-three million, three hundred thirteen thousand, six hundred forty-six".