143131 has 4 divisors (see below), whose sum is σ = 146664. Its totient is φ = 139600.

The previous prime is 143113. The next prime is 143137. The reversal of 143131 is 131341.

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 143131 - 2⁹ = 142619 is a prime.

It is a super-2 number, since 2×143131² = 40972966322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (143137) 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, 1705 + ... + 1786.

It is an arithmetic number, because the mean of its divisors is an integer number (36666).

2¹⁴³¹³¹ is an apocalyptic number.

143131 is a deficient number, since it is larger than the sum of its proper divisors (3533).

143131 is an equidigital number, since it uses as much as digits as its factorization.

143131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3532.

The product of its digits is 36, while the sum is 13.

The square root of 143131 is about 378.3265785006. The cubic root of 143131 is about 52.3091787684.

Adding to 143131 its reverse (131341), we get a palindrome (274472).

It can be divided in two parts, 14 and 3131, that multiplied together give a palindrome (43834).

The spelling of 143131 in words is "one hundred forty-three thousand, one hundred thirty-one".