1213001505323 has 2 divisors, whose sum is σ = 1213001505324. Its totient is φ = 1213001505322.

The previous prime is 1213001505311. The next prime is 1213001505341. The reversal of 1213001505323 is 3235051003121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1213001505323 - 2⁴ = 1213001505307 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1213001505292 and 1213001505301.

It is not a weakly prime, because it can be changed into another prime (1213001505343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606500752661 + 606500752662.

It is an arithmetic number, because the mean of its divisors is an integer number (606500752662).

Almost surely, 2^{1213001505323} is an apocalyptic number.

1213001505323 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213001505323 is an equidigital number, since it uses as much as digits as its factorization.

1213001505323 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2700, while the sum is 26.

Adding to 1213001505323 its reverse (3235051003121), we get a palindrome (4448052508444).

The spelling of 1213001505323 in words is "one trillion, two hundred thirteen billion, one million, five hundred five thousand, three hundred twenty-three".