1247130315 has 12 divisors (see below), whose sum is σ = 2161692624. Its totient is φ = 665136144.

The previous prime is 1247130233. The next prime is 1247130323. The reversal of 1247130315 is 5130317421.

It is not a de Polignac number, because 1247130315 - 2⁷ = 1247130187 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13856959 + ... + 13857048.

It is an arithmetic number, because the mean of its divisors is an integer number (180141052).

Almost surely, 2^1247130315 is an apocalyptic number.

1247130315 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1247130315 is a deficient number, since it is larger than the sum of its proper divisors (914562309).

1247130315 is a wasteful number, since it uses less digits than its factorization.

1247130315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27714018 (or 27714015 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 1247130315 is about 35314.7322657273. The cubic root of 1247130315 is about 1076.3923735295.

Adding to 1247130315 its reverse (5130317421), we get a palindrome (6377447736).

The spelling of 1247130315 in words is "one billion, two hundred forty-seven million, one hundred thirty thousand, three hundred fifteen".