1223313040 has 20 divisors (see below), whose sum is σ = 2844203004. Its totient is φ = 489325184.

The previous prime is 1223313019. The next prime is 1223313053. The reversal of 1223313040 is 403133221.

It can be written as a sum of positive squares in 2 ways, for example, as 471237264 + 752075776 = 21708^2 + 27424^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 1223312999 and 1223313017.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7645627 + ... + 7645786.

Almost surely, 2^1223313040 is an apocalyptic number.

1223313040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1223313040 is an abundant number, since it is smaller than the sum of its proper divisors (1620889964).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1223313040 is a wasteful number, since it uses less digits than its factorization.

1223313040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15291426 (or 15291420 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 1223313040 is about 34975.8922688185. The cubic root of 1223313040 is about 1069.4960913711.

Adding to 1223313040 its reverse (403133221), we get a palindrome (1626446261).

The spelling of 1223313040 in words is "one billion, two hundred twenty-three million, three hundred thirteen thousand, forty".