523315642 has 16 divisors (see below), whose sum is σ = 841243392. Its totient is φ = 243516240.

The previous prime is 523315621. The next prime is 523315687. The reversal of 523315642 is 246513325.

It is a happy number.

It is a super-2 number, since 2×523315642² = 547718522323744328, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152034 + ... + 155437.

It is an arithmetic number, because the mean of its divisors is an integer number (52577712).

Almost surely, 2^523315642 is an apocalyptic number.

523315642 is a deficient number, since it is larger than the sum of its proper divisors (317927750).

523315642 is a wasteful number, since it uses less digits than its factorization.

523315642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307533.

The product of its digits is 21600, while the sum is 31.

The square root of 523315642 is about 22876.0932416355. The cubic root of 523315642 is about 805.8506712909.

Adding to 523315642 its reverse (246513325), we get a palindrome (769828967).

The spelling of 523315642 in words is "five hundred twenty-three million, three hundred fifteen thousand, six hundred forty-two".