521352143231 has 2 divisors, whose sum is σ = 521352143232. Its totient is φ = 521352143230.

The previous prime is 521352143197. The next prime is 521352143239. The reversal of 521352143231 is 132341253125.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 521352143231 - 2³⁰ = 520278401407 is a prime.

It is a super-2 number, since 2×521352143231² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (521352143239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260676071615 + 260676071616.

It is an arithmetic number, because the mean of its divisors is an integer number (260676071616).

Almost surely, 2^521352143231 is an apocalyptic number.

521352143231 is a deficient number, since it is larger than the sum of its proper divisors (1).

521352143231 is an equidigital number, since it uses as much as digits as its factorization.

521352143231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21600, while the sum is 32.

Adding to 521352143231 its reverse (132341253125), we get a palindrome (653693396356).

The spelling of 521352143231 in words is "five hundred twenty-one billion, three hundred fifty-two million, one hundred forty-three thousand, two hundred thirty-one".