42031323 has 12 divisors (see below), whose sum is σ = 60772920. Its totient is φ = 27992736.

The previous prime is 42031321. The next prime is 42031331. The reversal of 42031323 is 32313024.

It is not a de Polignac number, because 42031323 - 2¹ = 42031321 is a prime.

It is a super-2 number, since 2×42031323² = 3533264226260658, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42031296 and 42031305.

It is not an unprimeable number, because it can be changed into a prime (42031321) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11268 + ... + 14526.

It is an arithmetic number, because the mean of its divisors is an integer number (5064410).

Almost surely, 2^42031323 is an apocalyptic number.

42031323 is a deficient number, since it is larger than the sum of its proper divisors (18741597).

42031323 is a wasteful number, since it uses less digits than its factorization.

42031323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4698 (or 4695 counting only the distinct ones).

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

The square root of 42031323 is about 6483.1568699207. The cubic root of 42031323 is about 347.6890553830.

Adding to 42031323 its reverse (32313024), we get a palindrome (74344347).

The spelling of 42031323 in words is "forty-two million, thirty-one thousand, three hundred twenty-three".