311442023 has 8 divisors (see below), whose sum is σ = 331244928. Its totient is φ = 291803904.

The previous prime is 311441993. The next prime is 311442031. The reversal of 311442023 is 320244113.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-311442023 is a prime.

It is a super-2 number, since 2×311442023² = 193992267380665058, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 311441986 and 311442004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311442073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37286 + ... + 44867.

It is an arithmetic number, because the mean of its divisors is an integer number (41405616).

Almost surely, 2^311442023 is an apocalyptic number.

311442023 is a deficient number, since it is larger than the sum of its proper divisors (19802905).

311442023 is a wasteful number, since it uses less digits than its factorization.

311442023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82393.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 311442023 is about 17647.7200510434. The cubic root of 311442023 is about 677.8377272533.

Adding to 311442023 its reverse (320244113), we get a palindrome (631686136).

The spelling of 311442023 in words is "three hundred eleven million, four hundred forty-two thousand, twenty-three".