1231303311033 has 16 divisors (see below), whose sum is σ = 1673645633856. Its totient is φ = 805059311360.

The previous prime is 1231303311001. The next prime is 1231303311059. The reversal of 1231303311033 is 3301133031321.

It is a cyclic number.

It is not a de Polignac number, because 1231303311033 - 2⁵ = 1231303311001 is a prime.

It is a super-2 number, since 2×1231303311033² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1231303310994 and 1231303311012.

It is not an unprimeable number, because it can be changed into a prime (1231303391033) 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, 18013308 + ... + 18081533.

It is an arithmetic number, because the mean of its divisors is an integer number (104602852116).

Almost surely, 2^{1231303311033} is an apocalyptic number.

It is an amenable number.

1231303311033 is a deficient number, since it is larger than the sum of its proper divisors (442342322823).

1231303311033 is a wasteful number, since it uses less digits than its factorization.

1231303311033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36095064.

The product of its (nonzero) digits is 1458, while the sum is 24.

Adding to 1231303311033 its reverse (3301133031321), we get a palindrome (4532436342354).

The spelling of 1231303311033 in words is "one trillion, two hundred thirty-one billion, three hundred three million, three hundred eleven thousand, thirty-three".