311442033121 has 4 divisors (see below), whose sum is σ = 311444407600. Its totient is φ = 311439658644.

The previous prime is 311442033083. The next prime is 311442033127. The reversal of 311442033121 is 121330244113.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 311442033121 - 2¹¹ = 311442031073 is a prime.

It is a super-2 number, since 2×311442033121² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (311442033127) 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, 978231 + ... + 1256908.

It is an arithmetic number, because the mean of its divisors is an integer number (77861101900).

Almost surely, 2^311442033121 is an apocalyptic number.

It is an amenable number.

311442033121 is a deficient number, since it is larger than the sum of its proper divisors (2374479).

311442033121 is a wasteful number, since it uses less digits than its factorization.

311442033121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2374478.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 311442033121 its reverse (121330244113), we get a palindrome (432772277234).

The spelling of 311442033121 in words is "three hundred eleven billion, four hundred forty-two million, thirty-three thousand, one hundred twenty-one".