143312146 has 4 divisors (see below), whose sum is σ = 214968222. Its totient is φ = 71656072.

The previous prime is 143312111. The next prime is 143312153. The reversal of 143312146 is 641213341.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 137007025 + 6305121 = 11705^2 + 2511^2 .

It is a super-2 number, since 2×143312146² = 41076742382250632, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 143312146.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35828035 + ... + 35828038.

Almost surely, 2^143312146 is an apocalyptic number.

143312146 is a deficient number, since it is larger than the sum of its proper divisors (71656076).

143312146 is an equidigital number, since it uses as much as digits as its factorization.

143312146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71656075.

The product of its digits is 1728, while the sum is 25.

The square root of 143312146 is about 11971.3051084667. The cubic root of 143312146 is about 523.3123689205.

Adding to 143312146 its reverse (641213341), we get a palindrome (784525487).

The spelling of 143312146 in words is "one hundred forty-three million, three hundred twelve thousand, one hundred forty-six".