1231303333011 has 16 divisors (see below), whose sum is σ = 1643643551616. Its totient is φ = 819916494336.

The previous prime is 1231303332989. The next prime is 1231303333031. The reversal of 1231303333011 is 1103333031321.

It is not a de Polignac number, because 1231303333011 - 2¹³ = 1231303324819 is a prime.

It is a super-2 number, since 2×1231303333011² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1231303333031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10267251 + ... + 10386483.

It is an arithmetic number, because the mean of its divisors is an integer number (102727721976).

Almost surely, 2^{1231303333011} is an apocalyptic number.

1231303333011 is a deficient number, since it is larger than the sum of its proper divisors (412340218605).

1231303333011 is a wasteful number, since it uses less digits than its factorization.

1231303333011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123202.

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

Adding to 1231303333011 its reverse (1103333031321), we get a palindrome (2334636364332).

The spelling of 1231303333011 in words is "one trillion, two hundred thirty-one billion, three hundred three million, three hundred thirty-three thousand, eleven".