131212143 has 10 divisors (see below), whose sum is σ = 196008384. Its totient is φ = 87474708.

The previous prime is 131212111. The next prime is 131212183. The reversal of 131212143 is 341212131.

It is not a de Polignac number, because 131212143 - 2⁵ = 131212111 is a prime.

It is a super-3 number, since 3×131212143³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131212183) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 809871 + ... + 810032.

Almost surely, 2^131212143 is an apocalyptic number.

131212143 is a deficient number, since it is larger than the sum of its proper divisors (64796241).

131212143 is an equidigital number, since it uses as much as digits as its factorization.

131212143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1619915 (or 1619906 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 131212143 is about 11454.7869032994. The cubic root of 131212143 is about 508.1493131161.

Adding to 131212143 its reverse (341212131), we get a palindrome (472424274).

The spelling of 131212143 in words is "one hundred thirty-one million, two hundred twelve thousand, one hundred forty-three".