143131013 has 4 divisors (see below), whose sum is σ = 143191680. Its totient is φ = 143070348.

The previous prime is 143130997. The next prime is 143131019. The reversal of 143131013 is 310131341.

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 143131013 - 2⁴ = 143130997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 143130982 and 143131000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143131019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26645 + ... + 31562.

It is an arithmetic number, because the mean of its divisors is an integer number (35797920).

Almost surely, 2^143131013 is an apocalyptic number.

It is an amenable number.

143131013 is a deficient number, since it is larger than the sum of its proper divisors (60667).

143131013 is an equidigital number, since it uses as much as digits as its factorization.

143131013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60666.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 143131013 is about 11963.7374177136. The cubic root of 143131013 is about 523.0918035210.

Adding to 143131013 its reverse (310131341), we get a palindrome (453262354).

The spelling of 143131013 in words is "one hundred forty-three million, one hundred thirty-one thousand, thirteen".