1213679247 has 12 divisors (see below), whose sum is σ = 1778726040. Its totient is φ = 735562960.

The previous prime is 1213679231. The next prime is 1213679263. The reversal of 1213679247 is 7429763121.

It is an interprime number because it is at equal distance from previous prime (1213679231) and next prime (1213679263).

It is not a de Polignac number, because 1213679247 - 2⁴ = 1213679231 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1213679199 and 1213679208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213679267) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1671372 + ... + 1672097.

It is an arithmetic number, because the mean of its divisors is an integer number (148227170).

Almost surely, 2^1213679247 is an apocalyptic number.

1213679247 is a deficient number, since it is larger than the sum of its proper divisors (565046793).

1213679247 is a wasteful number, since it uses less digits than its factorization.

1213679247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3343494 (or 3343483 counting only the distinct ones).

The product of its digits is 127008, while the sum is 42.

The square root of 1213679247 is about 34837.8995779022. The cubic root of 1213679247 is about 1066.6812028075.

The spelling of 1213679247 in words is "one billion, two hundred thirteen million, six hundred seventy-nine thousand, two hundred forty-seven".