520202330431387 has 2 divisors, whose sum is σ = 520202330431388. Its totient is φ = 520202330431386.

The previous prime is 520202330431351. The next prime is 520202330431391. The reversal of 520202330431387 is 783134033202025.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 520202330431387 - 2¹¹ = 520202330429339 is a prime.

It is a super-2 number, since 2×520202330431387² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (520202330431337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260101165215693 + 260101165215694.

It is an arithmetic number, because the mean of its divisors is an integer number (260101165215694).

Almost surely, 2^{520202330431387} is an apocalyptic number.

520202330431387 is a deficient number, since it is larger than the sum of its proper divisors (1).

520202330431387 is an equidigital number, since it uses as much as digits as its factorization.

520202330431387 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 725760, while the sum is 43.

The spelling of 520202330431387 in words is "five hundred twenty trillion, two hundred two billion, three hundred thirty million, four hundred thirty-one thousand, three hundred eighty-seven".