1233452311213 has 4 divisors (see below), whose sum is σ = 1238037636060. Its totient is φ = 1228866986368.

The previous prime is 1233452311121. The next prime is 1233452311283. The reversal of 1233452311213 is 3121132543321.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 277363382409 + 956088928804 = 526653^2 + 977798^2 .

It is a cyclic number.

It is not a de Polignac number, because 1233452311213 - 2²⁹ = 1232915440301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1233452311283) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2292662020 + ... + 2292662557.

It is an arithmetic number, because the mean of its divisors is an integer number (309509409015).

Almost surely, 2^{1233452311213} is an apocalyptic number.

It is an amenable number.

1233452311213 is a deficient number, since it is larger than the sum of its proper divisors (4585324847).

1233452311213 is an equidigital number, since it uses as much as digits as its factorization.

1233452311213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4585324846.

The product of its digits is 12960, while the sum is 31.

Adding to 1233452311213 its reverse (3121132543321), we get a palindrome (4354584854534).

The spelling of 1233452311213 in words is "one trillion, two hundred thirty-three billion, four hundred fifty-two million, three hundred eleven thousand, two hundred thirteen".