1231312033603 has 2 divisors, whose sum is σ = 1231312033604. Its totient is φ = 1231312033602.

The previous prime is 1231312033583. The next prime is 1231312033619. The reversal of 1231312033603 is 3063302131321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1231312033603 - 2⁵ = 1231312033571 is a prime.

It is a super-2 number, since 2×1231312033603² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1231312033663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615656016801 + 615656016802.

It is an arithmetic number, because the mean of its divisors is an integer number (615656016802).

Almost surely, 2^{1231312033603} is an apocalyptic number.

1231312033603 is a deficient number, since it is larger than the sum of its proper divisors (1).

1231312033603 is an equidigital number, since it uses as much as digits as its factorization.

1231312033603 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 28.

Adding to 1231312033603 its reverse (3063302131321), we get a palindrome (4294614164924).

The spelling of 1231312033603 in words is "one trillion, two hundred thirty-one billion, three hundred twelve million, thirty-three thousand, six hundred three".