1313021223 has 24 divisors (see below), whose sum is σ = 1931426640. Its totient is φ = 859309440.

The previous prime is 1313021221. The next prime is 1313021249. The reversal of 1313021223 is 3221203131.

It is not a de Polignac number, because 1313021223 - 2¹ = 1313021221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1313021196 and 1313021205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313021221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 536683 + ... + 539123.

It is an arithmetic number, because the mean of its divisors is an integer number (80476110).

Almost surely, 2^1313021223 is an apocalyptic number.

1313021223 is a deficient number, since it is larger than the sum of its proper divisors (618405417).

1313021223 is a wasteful number, since it uses less digits than its factorization.

1313021223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3519 (or 3516 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 1313021223 is about 36235.6347122553. The cubic root of 1313021223 is about 1095.0246995117.

Adding to 1313021223 its reverse (3221203131), we get a palindrome (4534224354).

The spelling of 1313021223 in words is "one billion, three hundred thirteen million, twenty-one thousand, two hundred twenty-three".