142316531 has 16 divisors (see below), whose sum is σ = 168000000. Its totient is φ = 120491784.

The previous prime is 142316513. The next prime is 142316533. The reversal of 142316531 is 135613241.

It is not a de Polignac number, because 142316531 - 2¹⁰ = 142315507 is a prime.

It is a super-2 number, since 2×142316531² = 40507989991747922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 142316531.

It is not an unprimeable number, because it can be changed into a prime (142316533) 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 15 ways as a sum of consecutive naturals, for example, 25970 + ... + 30968.

It is an arithmetic number, because the mean of its divisors is an integer number (10500000).

Almost surely, 2^142316531 is an apocalyptic number.

142316531 is a deficient number, since it is larger than the sum of its proper divisors (25683469).

142316531 is an frugal number, since it uses more digits than its factorization.

142316531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5103 (or 5089 counting only the distinct ones).

The product of its digits is 2160, while the sum is 26.

The square root of 142316531 is about 11929.6492404429. The cubic root of 142316531 is about 522.0977036572.

Adding to 142316531 its reverse (135613241), we get a palindrome (277929772).

The spelling of 142316531 in words is "one hundred forty-two million, three hundred sixteen thousand, five hundred thirty-one".