243130512513 has 32 divisors (see below), whose sum is σ = 374468693760. Its totient is φ = 137438945280.

The previous prime is 243130512509. The next prime is 243130512523. The reversal of 243130512513 is 315215031342.

It is not a de Polignac number, because 243130512513 - 2² = 243130512509 is a prime.

It is a super-2 number, since 2×243130512513² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (243130512523) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4825033 + ... + 4875161.

It is an arithmetic number, because the mean of its divisors is an integer number (11702146680).

Almost surely, 2^243130512513 is an apocalyptic number.

It is an amenable number.

243130512513 is a deficient number, since it is larger than the sum of its proper divisors (131338181247).

243130512513 is a wasteful number, since it uses less digits than its factorization.

243130512513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52617.

The product of its (nonzero) digits is 10800, while the sum is 30.

Adding to 243130512513 its reverse (315215031342), we get a palindrome (558345543855).

The spelling of 243130512513 in words is "two hundred forty-three billion, one hundred thirty million, five hundred twelve thousand, five hundred thirteen".