531235460 has 72 divisors (see below), whose sum is σ = 1301416704. Its totient is φ = 181621440.

The previous prime is 531235433. The next prime is 531235493. The reversal of 531235460 is 64532135.

It is a super-2 number, since 2×531235460² = 564422227922823200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 535565 + ... + 536555.

It is an arithmetic number, because the mean of its divisors is an integer number (18075232).

Almost surely, 2^531235460 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 531235460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (650708352).

531235460 is an abundant number, since it is smaller than the sum of its proper divisors (770181244).

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

531235460 is a wasteful number, since it uses less digits than its factorization.

531235460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1561 (or 1552 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 29.

The square root of 531235460 is about 23048.5457241883. The cubic root of 531235460 is about 809.8955613962.

Adding to 531235460 its reverse (64532135), we get a palindrome (595767595).

The spelling of 531235460 in words is "five hundred thirty-one million, two hundred thirty-five thousand, four hundred sixty".