520137323 has 2 divisors, whose sum is σ = 520137324. Its totient is φ = 520137322.

The previous prime is 520137259. The next prime is 520137329. The reversal of 520137323 is 323731025.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 520137323 - 2⁶ = 520137259 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 520137292 and 520137301.

It is not a weakly prime, because it can be changed into another prime (520137329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260068661 + 260068662.

It is an arithmetic number, because the mean of its divisors is an integer number (260068662).

Almost surely, 2^520137323 is an apocalyptic number.

520137323 is a deficient number, since it is larger than the sum of its proper divisors (1).

520137323 is an equidigital number, since it uses as much as digits as its factorization.

520137323 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3780, while the sum is 26.

The square root of 520137323 is about 22806.5193091800. The cubic root of 520137323 is about 804.2159324264.

Adding to 520137323 its reverse (323731025), we get a palindrome (843868348).

It can be divided in two parts, 5201 and 37323, that added together give a palindrome (42524).

The spelling of 520137323 in words is "five hundred twenty million, one hundred thirty-seven thousand, three hundred twenty-three".