1247113345 has 8 divisors (see below), whose sum is σ = 1498705920. Its totient is φ = 996244080.

The previous prime is 1247113339. The next prime is 1247113403. The reversal of 1247113345 is 5433117421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1247113345 - 2⁹ = 1247112833 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 177025 + ... + 183934.

It is an arithmetic number, because the mean of its divisors is an integer number (187338240).

Almost surely, 2^1247113345 is an apocalyptic number.

It is an amenable number.

1247113345 is a deficient number, since it is larger than the sum of its proper divisors (251592575).

1247113345 is an equidigital number, since it uses as much as digits as its factorization.

1247113345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361655.

The product of its digits is 10080, while the sum is 31.

The square root of 1247113345 is about 35314.4919969125. The cubic root of 1247113345 is about 1076.3874912647.

The spelling of 1247113345 in words is "one billion, two hundred forty-seven million, one hundred thirteen thousand, three hundred forty-five".