143312131 has 4 divisors (see below), whose sum is σ = 143354200. Its totient is φ = 143270064.

The previous prime is 143312111. The next prime is 143312153. The reversal of 143312131 is 131213341.

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

It is a cyclic number.

It is not a de Polignac number, because 143312131 - 2¹³ = 143303939 is a prime.

It is a super-2 number, since 2×143312131² = 41076733783522322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 143312099 and 143312108.

It is not an unprimeable number, because it can be changed into a prime (143312111) 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, 15426 + ... + 22903.

It is an arithmetic number, because the mean of its divisors is an integer number (35838550).

Almost surely, 2^143312131 is an apocalyptic number.

143312131 is a deficient number, since it is larger than the sum of its proper divisors (42069).

143312131 is an equidigital number, since it uses as much as digits as its factorization.

143312131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42068.

The product of its digits is 216, while the sum is 19.

The square root of 143312131 is about 11971.3044819685. The cubic root of 143312131 is about 523.3123506627.

Adding to 143312131 its reverse (131213341), we get a palindrome (274525472).

The spelling of 143312131 in words is "one hundred forty-three million, three hundred twelve thousand, one hundred thirty-one".