131012143 has 4 divisors (see below), whose sum is σ = 131035048. Its totient is φ = 130989240.

The previous prime is 131012113. The next prime is 131012173. The reversal of 131012143 is 341210131.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is an interprime number because it is at equal distance from previous prime (131012113) and next prime (131012173).

It is a cyclic number.

It is not a de Polignac number, because 131012143 - 2¹⁷ = 130881071 is a prime.

It is a super-2 number, since 2×131012143² = 34328363226904898, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131012113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5173 + ... + 16993.

It is an arithmetic number, because the mean of its divisors is an integer number (32758762).

Almost surely, 2^131012143 is an apocalyptic number.

131012143 is a deficient number, since it is larger than the sum of its proper divisors (22905).

131012143 is a wasteful number, since it uses less digits than its factorization.

131012143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22904.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 131012143 is about 11446.0535993852. The cubic root of 131012143 is about 507.8909997708.

Adding to 131012143 its reverse (341210131), we get a palindrome (472222274).

The spelling of 131012143 in words is "one hundred thirty-one million, twelve thousand, one hundred forty-three".