312233442431021 has 8 divisors (see below), whose sum is σ = 313586042398200. Its totient is φ = 310880949663232.

The previous prime is 312233442430969. The next prime is 312233442431039. The reversal of 312233442431021 is 120134244332213.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 54286908241225 + 257946534189796 = 7367965^2 + 16060714^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 312233442431021 - 2⁶ = 312233442430957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312233445431021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20959196 + ... + 32615253.

It is an arithmetic number, because the mean of its divisors is an integer number (39198255299775).

Almost surely, 2^{312233442431021} is an apocalyptic number.

It is an amenable number.

312233442431021 is a deficient number, since it is larger than the sum of its proper divisors (1352599967179).

312233442431021 is a wasteful number, since it uses less digits than its factorization.

312233442431021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53599695.

The product of its (nonzero) digits is 82944, while the sum is 35.

Adding to 312233442431021 its reverse (120134244332213), we get a palindrome (432367686763234).

The spelling of 312233442431021 in words is "three hundred twelve trillion, two hundred thirty-three billion, four hundred forty-two million, four hundred thirty-one thousand, twenty-one".