1715231513 has 2 divisors, whose sum is σ = 1715231514. Its totient is φ = 1715231512.

The previous prime is 1715231471. The next prime is 1715231543. The reversal of 1715231513 is 3151325171.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1005968089 + 709263424 = 31717^2 + 26632^2 .

It is a cyclic number.

It is not a de Polignac number, because 1715231513 - 2¹⁴ = 1715215129 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1715231543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 857615756 + 857615757.

It is an arithmetic number, because the mean of its divisors is an integer number (857615757).

Almost surely, 2^1715231513 is an apocalyptic number.

It is an amenable number.

1715231513 is a deficient number, since it is larger than the sum of its proper divisors (1).

1715231513 is an equidigital number, since it uses as much as digits as its factorization.

1715231513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3150, while the sum is 29.

The square root of 1715231513 is about 41415.3535901844. The cubic root of 1715231513 is about 1197.0370217008.

Adding to 1715231513 its reverse (3151325171), we get a palindrome (4866556684).

The spelling of 1715231513 in words is "one billion, seven hundred fifteen million, two hundred thirty-one thousand, five hundred thirteen".