531135842 has 8 divisors (see below), whose sum is σ = 838635600. Its totient is φ = 251590644.

The previous prime is 531135827. The next prime is 531135893. The reversal of 531135842 is 248531135.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 531135799 and 531135808.

It is an unprimeable number.

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, 6988592 + ... + 6988667.

It is an arithmetic number, because the mean of its divisors is an integer number (104829450).

Almost surely, 2^531135842 is an apocalyptic number.

531135842 is a deficient number, since it is larger than the sum of its proper divisors (307499758).

531135842 is a wasteful number, since it uses less digits than its factorization.

531135842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13977280.

The product of its digits is 14400, while the sum is 32.

The square root of 531135842 is about 23046.3845754600. The cubic root of 531135842 is about 809.8449339904.

Adding to 531135842 its reverse (248531135), we get a palindrome (779666977).

The spelling of 531135842 in words is "five hundred thirty-one million, one hundred thirty-five thousand, eight hundred forty-two".