311132023 has 4 divisors (see below), whose sum is σ = 312930648. Its totient is φ = 309333400.

The previous prime is 311132021. The next prime is 311132071. The reversal of 311132023 is 320231113.

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

It is a cyclic number.

It is not a de Polignac number, because 311132023 - 2¹ = 311132021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 311131988 and 311132006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311132021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 899053 + ... + 899398.

It is an arithmetic number, because the mean of its divisors is an integer number (78232662).

Almost surely, 2^311132023 is an apocalyptic number.

311132023 is a deficient number, since it is larger than the sum of its proper divisors (1798625).

311132023 is a wasteful number, since it uses less digits than its factorization.

311132023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1798624.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 311132023 is about 17638.9348601326. The cubic root of 311132023 is about 677.6127528467.

Adding to 311132023 its reverse (320231113), we get a palindrome (631363136).

The spelling of 311132023 in words is "three hundred eleven million, one hundred thirty-two thousand, twenty-three".