1213001947 has 2 divisors, whose sum is σ = 1213001948. Its totient is φ = 1213001946.

The previous prime is 1213001941. The next prime is 1213001953. The reversal of 1213001947 is 7491003121.

It is a balanced prime because it is at equal distance from previous prime (1213001941) and next prime (1213001953).

It is a cyclic number.

It is not a de Polignac number, because 1213001947 - 2¹⁵ = 1212969179 is a prime.

It is not a weakly prime, because it can be changed into another prime (1213001941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606500973 + 606500974.

It is an arithmetic number, because the mean of its divisors is an integer number (606500974).

Almost surely, 2^1213001947 is an apocalyptic number.

1213001947 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213001947 is an equidigital number, since it uses as much as digits as its factorization.

1213001947 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 1213001947 is about 34828.1774860529. The cubic root of 1213001947 is about 1066.4827435596.

The spelling of 1213001947 in words is "one billion, two hundred thirteen million, one thousand, nine hundred forty-seven".