31322423 has 16 divisors (see below), whose sum is σ = 34942752. Its totient is φ = 28072000.

The previous prime is 31322371. The next prime is 31322429. The reversal of 31322423 is 32422313.

It is not a de Polignac number, because 31322423 - 2⁸ = 31322167 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31322395 and 31322404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31322429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 134315 + ... + 134547.

It is an arithmetic number, because the mean of its divisors is an integer number (2183922).

Almost surely, 2^31322423 is an apocalyptic number.

31322423 is a deficient number, since it is larger than the sum of its proper divisors (3620329).

31322423 is a wasteful number, since it uses less digits than its factorization.

31322423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367 (or 345 counting only the distinct ones).

The product of its digits is 864, while the sum is 20.

The square root of 31322423 is about 5596.6439050560. The cubic root of 31322423 is about 315.2234007756.

Adding to 31322423 its reverse (32422313), we get a palindrome (63744736).

It can be divided in two parts, 3132 and 2423, that added together give a palindrome (5555).

The spelling of 31322423 in words is "thirty-one million, three hundred twenty-two thousand, four hundred twenty-three".