315224532 has 72 divisors (see below), whose sum is σ = 915812352. Its totient is φ = 89553600.

The previous prime is 315224531. The next prime is 315224537. The reversal of 315224532 is 235422513.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 315224496 and 315224505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315224531) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 42157 + ... + 49067.

It is an arithmetic number, because the mean of its divisors is an integer number (12719616).

Almost surely, 2^315224532 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 315224532, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (457906176).

315224532 is an abundant number, since it is smaller than the sum of its proper divisors (600587820).

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

315224532 is a wasteful number, since it uses less digits than its factorization.

315224532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7109 (or 7104 counting only the distinct ones).

The product of its digits is 7200, while the sum is 27.

The square root of 315224532 is about 17754.5636950053. The cubic root of 315224532 is about 680.5708384276.

The spelling of 315224532 in words is "three hundred fifteen million, two hundred twenty-four thousand, five hundred thirty-two".