531214642 has 32 divisors (see below), whose sum is σ = 931875840. Its totient is φ = 222406800.

The previous prime is 531214627. The next prime is 531214669. The reversal of 531214642 is 246412135.

It is a self number, because there is not a number n which added to its sum of digits gives 531214642.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 136017 + ... + 139867.

It is an arithmetic number, because the mean of its divisors is an integer number (29121120).

Almost surely, 2^531214642 is an apocalyptic number.

531214642 is a deficient number, since it is larger than the sum of its proper divisors (400661198).

531214642 is a wasteful number, since it uses less digits than its factorization.

531214642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4086.

The product of its digits is 5760, while the sum is 28.

The square root of 531214642 is about 23048.0941077565. The cubic root of 531214642 is about 809.8849818903.

Adding to 531214642 its reverse (246412135), we get a palindrome (777626777).

The spelling of 531214642 in words is "five hundred thirty-one million, two hundred fourteen thousand, six hundred forty-two".