513231541 has 4 divisors (see below), whose sum is σ = 513282400. Its totient is φ = 513180684.

The previous prime is 513231539. The next prime is 513231569. The reversal of 513231541 is 145132315.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, 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 513231541 - 2¹ = 513231539 is a prime.

It is a super-2 number, since 2×513231541² = 526813229354469362, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513231571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4611 + ... + 32368.

It is an arithmetic number, because the mean of its divisors is an integer number (128320600).

Almost surely, 2^513231541 is an apocalyptic number.

It is an amenable number.

513231541 is a deficient number, since it is larger than the sum of its proper divisors (50859).

513231541 is a wasteful number, since it uses less digits than its factorization.

513231541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50858.

The product of its digits is 1800, while the sum is 25.

The square root of 513231541 is about 22654.6141216309. The cubic root of 513231541 is about 800.6409140036.

Adding to 513231541 its reverse (145132315), we get a palindrome (658363856).

The spelling of 513231541 in words is "five hundred thirteen million, two hundred thirty-one thousand, five hundred forty-one".