1230247797 has 4 divisors (see below), whose sum is σ = 1640330400. Its totient is φ = 820165196.

The previous prime is 1230247783. The next prime is 1230247841. The reversal of 1230247797 is 7977420321.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1230247797 - 2²⁰ = 1229199221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1230247727) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 205041297 + ... + 205041302.

It is an arithmetic number, because the mean of its divisors is an integer number (410082600).

Almost surely, 2^1230247797 is an apocalyptic number.

It is an amenable number.

1230247797 is a deficient number, since it is larger than the sum of its proper divisors (410082603).

1230247797 is an equidigital number, since it uses as much as digits as its factorization.

1230247797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410082602.

The product of its (nonzero) digits is 148176, while the sum is 42.

The square root of 1230247797 is about 35074.8884103713. Note that the first 3 decimals coincide. The cubic root of 1230247797 is about 1071.5132160607.

The spelling of 1230247797 in words is "one billion, two hundred thirty million, two hundred forty-seven thousand, seven hundred ninety-seven".