1520342303 has 2 divisors, whose sum is σ = 1520342304. Its totient is φ = 1520342302.

The previous prime is 1520342231. The next prime is 1520342309. The reversal of 1520342303 is 3032430251.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1520342303 - 2¹² = 1520338207 is a prime.

It is a super-2 number, since 2×1520342303² = 4622881436582687618, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1520342309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 760171151 + 760171152.

It is an arithmetic number, because the mean of its divisors is an integer number (760171152).

Almost surely, 2^1520342303 is an apocalyptic number.

1520342303 is a deficient number, since it is larger than the sum of its proper divisors (1).

1520342303 is an equidigital number, since it uses as much as digits as its factorization.

1520342303 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 1520342303 is about 38991.5670754588. The cubic root of 1520342303 is about 1149.8657191668.

Adding to 1520342303 its reverse (3032430251), we get a palindrome (4552772554).

The spelling of 1520342303 in words is "one billion, five hundred twenty million, three hundred forty-two thousand, three hundred three".