1231003011233 has 2 divisors, whose sum is σ = 1231003011234. Its totient is φ = 1231003011232.

The previous prime is 1231003011209. The next prime is 1231003011241. The reversal of 1231003011233 is 3321103001321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1229475139489 + 1527871744 = 1108817^2 + 39088^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1231003011233 is a prime.

It is not a weakly prime, because it can be changed into another prime (1231003011533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615501505616 + 615501505617.

It is an arithmetic number, because the mean of its divisors is an integer number (615501505617).

Almost surely, 2^{1231003011233} is an apocalyptic number.

It is an amenable number.

1231003011233 is a deficient number, since it is larger than the sum of its proper divisors (1).

1231003011233 is an equidigital number, since it uses as much as digits as its factorization.

1231003011233 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 1231003011233 its reverse (3321103001321), we get a palindrome (4552106012554).

The spelling of 1231003011233 in words is "one trillion, two hundred thirty-one billion, three million, eleven thousand, two hundred thirty-three".