1213323213303 has 16 divisors (see below), whose sum is σ = 1811669544960. Its totient is φ = 802512989208.

The previous prime is 1213323213293. The next prime is 1213323213307. The reversal of 1213323213303 is 3033123233121.

1213323213303 is a `hidden beast` number, since 1 + 2 + 1 + 3 + 3 + 2 + 321 + 330 + 3 = 666.

It is not a de Polignac number, because 1213323213303 - 2⁹ = 1213323212791 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213323213307) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 176917425 + ... + 176924282.

It is an arithmetic number, because the mean of its divisors is an integer number (113229346560).

Almost surely, 2^{1213323213303} is an apocalyptic number.

1213323213303 is a deficient number, since it is larger than the sum of its proper divisors (598346331657).

1213323213303 is a wasteful number, since it uses less digits than its factorization.

1213323213303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353841843 (or 353841837 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 27.

Adding to 1213323213303 its reverse (3033123233121), we get a palindrome (4246446446424).

The spelling of 1213323213303 in words is "one trillion, two hundred thirteen billion, three hundred twenty-three million, two hundred thirteen thousand, three hundred three".