513203101211 has 4 divisors (see below), whose sum is σ = 513204599352. Its totient is φ = 513201603072.

The previous prime is 513203101181. The next prime is 513203101231. The reversal of 513203101211 is 112101302315.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 513203101211 - 2²² = 513198906907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (513203101231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46235 + ... + 1014171.

It is an arithmetic number, because the mean of its divisors is an integer number (128301149838).

Almost surely, 2^513203101211 is an apocalyptic number.

513203101211 is a deficient number, since it is larger than the sum of its proper divisors (1498141).

513203101211 is an equidigital number, since it uses as much as digits as its factorization.

513203101211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1498140.

The product of its (nonzero) digits is 180, while the sum is 20.

Adding to 513203101211 its reverse (112101302315), we get a palindrome (625304403526).

The spelling of 513203101211 in words is "five hundred thirteen billion, two hundred three million, one hundred one thousand, two hundred eleven".