1513123247 has 2 divisors, whose sum is σ = 1513123248. Its totient is φ = 1513123246.

The previous prime is 1513123231. The next prime is 1513123279. The reversal of 1513123247 is 7423213151.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1513123247 - 2⁴ = 1513123231 is a prime.

It is a super-2 number, since 2×1513123247² = 4579083921223646018, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1513123147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 756561623 + 756561624.

It is an arithmetic number, because the mean of its divisors is an integer number (756561624).

Almost surely, 2^1513123247 is an apocalyptic number.

1513123247 is a deficient number, since it is larger than the sum of its proper divisors (1).

1513123247 is an equidigital number, since it uses as much as digits as its factorization.

1513123247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5040, while the sum is 29.

The square root of 1513123247 is about 38898.8849068968. The cubic root of 1513123247 is about 1148.0428581227.

Adding to 1513123247 its reverse (7423213151), we get a palindrome (8936336398).

The spelling of 1513123247 in words is "one billion, five hundred thirteen million, one hundred twenty-three thousand, two hundred forty-seven".