1233312012331 has 4 divisors (see below), whose sum is σ = 1409499442672. Its totient is φ = 1057124581992.

The previous prime is 1233312012329. The next prime is 1233312012379. The reversal of 1233312012331 is 1332102133321.

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

It is a cyclic number.

It is not a de Polignac number, because 1233312012331 - 2¹ = 1233312012329 is a prime.

It is a super-2 number, since 2×1233312012331² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1233312012296 and 1233312012305.

It is not an unprimeable number, because it can be changed into a prime (1233312012391) 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 3 ways as a sum of consecutive naturals, for example, 88093715160 + ... + 88093715173.

It is an arithmetic number, because the mean of its divisors is an integer number (352374860668).

Almost surely, 2^{1233312012331} is an apocalyptic number.

1233312012331 is a deficient number, since it is larger than the sum of its proper divisors (176187430341).

1233312012331 is an equidigital number, since it uses as much as digits as its factorization.

1233312012331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176187430340.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 1233312012331 its reverse (1332102133321), we get a palindrome (2565414145652).

The spelling of 1233312012331 in words is "one trillion, two hundred thirty-three billion, three hundred twelve million, twelve thousand, three hundred thirty-one".