311442023223 has 32 divisors (see below), whose sum is σ = 475991040000. Its totient is φ = 201110400288.

The previous prime is 311442023203. The next prime is 311442023237. The reversal of 311442023223 is 322320244113.

311442023223 is a `hidden beast` number, since 3 + 1 + 1 + 4 + 420 + 232 + 2 + 3 = 666.

It is not a de Polignac number, because 311442023223 - 2¹² = 311442019127 is a prime.

It is a super-2 number, since 2×311442023223² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311442023203) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 476223 + ... + 921776.

It is an arithmetic number, because the mean of its divisors is an integer number (14874720000).

Almost surely, 2^311442023223 is an apocalyptic number.

311442023223 is a deficient number, since it is larger than the sum of its proper divisors (164549016777).

311442023223 is a wasteful number, since it uses less digits than its factorization.

311442023223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1398268 (or 1398262 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 311442023223 its reverse (322320244113), we get a palindrome (633762267336).

The spelling of 311442023223 in words is "three hundred eleven billion, four hundred forty-two million, twenty-three thousand, two hundred twenty-three".