1223919671 has 12 divisors (see below), whose sum is σ = 1323838152. Its totient is φ = 1124841984.

The previous prime is 1223919661. The next prime is 1223919691. The reversal of 1223919671 is 1769193221.

It is a de Polignac number, because none of the positive numbers 2^k-1223919671 is a prime.

It is a super-2 number, since 2×1223919671² = 2995958722121496482, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223919661) 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, 2620580 + ... + 2621046.

It is an arithmetic number, because the mean of its divisors is an integer number (110319846).

Almost surely, 2^1223919671 is an apocalyptic number.

1223919671 is a deficient number, since it is larger than the sum of its proper divisors (99918481).

1223919671 is an frugal number, since it uses more digits than its factorization.

1223919671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1378 (or 929 counting only the distinct ones).

The product of its digits is 40824, while the sum is 41.

The square root of 1223919671 is about 34984.5633244150. The cubic root of 1223919671 is about 1069.6728469653.

The spelling of 1223919671 in words is "one billion, two hundred twenty-three million, nine hundred nineteen thousand, six hundred seventy-one".