312231321011333 has 4 divisors (see below), whose sum is σ = 314510381748780. Its totient is φ = 309952260273888.

The previous prime is 312231321011321. The next prime is 312231321011339. The reversal of 312231321011333 is 333110123132213.

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

It can be written as a sum of positive squares in 2 ways, for example, as 275206931567044 + 37024389444289 = 16589362^2 + 6084767^2 .

It is a cyclic number.

It is not a de Polignac number, because 312231321011333 - 2¹² = 312231321007237 is a prime.

It is a super-2 number, since 2×312231321011333² (a number of 30 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 = 312231321011296 and 312231321011305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312231321011339) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1139530368518 + ... + 1139530368791.

It is an arithmetic number, because the mean of its divisors is an integer number (78627595437195).

Almost surely, 2^{312231321011333} is an apocalyptic number.

It is an amenable number.

312231321011333 is a deficient number, since it is larger than the sum of its proper divisors (2279060737447).

312231321011333 is a wasteful number, since it uses less digits than its factorization.

312231321011333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2279060737446.

The product of its (nonzero) digits is 5832, while the sum is 29.

Adding to 312231321011333 its reverse (333110123132213), we get a palindrome (645341444143546).

The spelling of 312231321011333 in words is "three hundred twelve trillion, two hundred thirty-one billion, three hundred twenty-one million, eleven thousand, three hundred thirty-three".