42323031 has 12 divisors (see below), whose sum is σ = 61252152. Its totient is φ = 28160496.

The previous prime is 42322993. The next prime is 42323033. The reversal of 42323031 is 13032324.

42323031 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-42323031 is a prime.

It is a super-2 number, since 2×42323031² = 3582477906053922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42322995 and 42323013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42323033) 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 11 ways as a sum of consecutive naturals, for example, 625 + ... + 9221.

It is an arithmetic number, because the mean of its divisors is an integer number (5104346).

Almost surely, 2^42323031 is an apocalyptic number.

42323031 is a deficient number, since it is larger than the sum of its proper divisors (18929121).

42323031 is a wasteful number, since it uses less digits than its factorization.

42323031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9150 (or 9147 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 42323031 is about 6505.6153436858. The cubic root of 42323031 is about 348.4915516877.

Adding to 42323031 its reverse (13032324), we get a palindrome (55355355).

The spelling of 42323031 in words is "forty-two million, three hundred twenty-three thousand, thirty-one".