513231223110120 has 48 divisors (see below), whose sum is σ = 1668001475109060. Its totient is φ = 136861659495936.

The previous prime is 513231223110091. The next prime is 513231223110121. The reversal of 513231223110120 is 21011322132315.

513231223110120 is a `hidden beast` number, since 5 + 1 + 32 + 312 + 2 + 311 + 0 + 1 + 2 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 500464593976356 + 12766629133764 = 22371066^2 + 3573042^2 .

It is not an unprimeable number, because it can be changed into a prime (513231223110121) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 712821142849 + ... + 712821143568.

Almost surely, 2^{513231223110120} is an apocalyptic number.

It is an amenable number.

513231223110120 is an abundant number, since it is smaller than the sum of its proper divisors (1154770251998940).

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

513231223110120 is a wasteful number, since it uses less digits than its factorization.

513231223110120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1425642286434 (or 1425642286427 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

Adding to 513231223110120 its reverse (21011322132315), we get a palindrome (534242545242435).

The spelling of 513231223110120 in words is "five hundred thirteen trillion, two hundred thirty-one billion, two hundred twenty-three million, one hundred ten thousand, one hundred twenty".