1247315067 has 6 divisors (see below), whose sum is σ = 1801677332. Its totient is φ = 831543372.

The previous prime is 1247315063. The next prime is 1247315077. The reversal of 1247315067 is 7605137421.

It is a happy number.

It is not a de Polignac number, because 1247315067 - 2² = 1247315063 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1247315063) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 69295273 + ... + 69295290.

Almost surely, 2^1247315067 is an apocalyptic number.

1247315067 is a deficient number, since it is larger than the sum of its proper divisors (554362265).

1247315067 is a wasteful number, since it uses less digits than its factorization.

1247315067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138590569 (or 138590566 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 1247315067 is about 35317.3479610233. The cubic root of 1247315067 is about 1076.4455237689.

The spelling of 1247315067 in words is "one billion, two hundred forty-seven million, three hundred fifteen thousand, sixty-seven".