531333420 has 48 divisors (see below), whose sum is σ = 1508125920. Its totient is φ = 139746816.

The previous prime is 531333371. The next prime is 531333479. The reversal of 531333420 is 24333135.

It is a happy number.

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, 56275 + ... + 65034.

It is an arithmetic number, because the mean of its divisors is an integer number (31419290).

Almost surely, 2^531333420 is an apocalyptic number.

It is an amenable number.

531333420 is an abundant number, since it is smaller than the sum of its proper divisors (976792500).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

531333420 is a wasteful number, since it uses less digits than its factorization.

531333420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121394 (or 121392 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 24.

The square root of 531333420 is about 23050.6707060771. The cubic root of 531333420 is about 809.9453400092.

Adding to 531333420 its reverse (24333135), we get a palindrome (555666555).

The spelling of 531333420 in words is "five hundred thirty-one million, three hundred thirty-three thousand, four hundred twenty".