523213463540 has 24 divisors (see below), whose sum is σ = 1128444174312. Its totient is φ = 203629023360.

The previous prime is 523213463449. The next prime is 523213463593. The reversal of 523213463540 is 45364312325.

It can be written as a sum of positive squares in 4 ways, for example, as 226800727696 + 296412735844 = 476236^2 + 544438^2 .

It is a junction number, because it is equal to n+sod(n) for n = 523213463494 and 523213463503.

It is a congruent number.

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, 353521871 + ... + 353523350.

It is an arithmetic number, because the mean of its divisors is an integer number (47018507263).

Almost surely, 2^523213463540 is an apocalyptic number.

It is an amenable number.

523213463540 is an abundant number, since it is smaller than the sum of its proper divisors (605230710772).

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

523213463540 is a wasteful number, since it uses less digits than its factorization.

523213463540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 707045267 (or 707045265 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 38.

Adding to 523213463540 its reverse (45364312325), we get a palindrome (568577775865).

The spelling of 523213463540 in words is "five hundred twenty-three billion, two hundred thirteen million, four hundred sixty-three thousand, five hundred forty".