42311023 has 4 divisors (see below), whose sum is σ = 42324480. Its totient is φ = 42297568.

The previous prime is 42310999. The next prime is 42311033. The reversal of 42311023 is 32011324.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 42311023 - 2⁵ = 42310991 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42310988 and 42311006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42311033) 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, 786 + ... + 9232.

It is an arithmetic number, because the mean of its divisors is an integer number (10581120).

Almost surely, 2^42311023 is an apocalyptic number.

42311023 is a deficient number, since it is larger than the sum of its proper divisors (13457).

42311023 is an equidigital number, since it uses as much as digits as its factorization.

42311023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13456.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 42311023 is about 6504.6923831954. The cubic root of 42311023 is about 348.4585902616.

Adding to 42311023 its reverse (32011324), we get a palindrome (74322347).

The spelling of 42311023 in words is "forty-two million, three hundred eleven thousand, twenty-three".