31444123 has 4 divisors (see below), whose sum is σ = 31457008. Its totient is φ = 31431240.

The previous prime is 31444121. The next prime is 31444157. The reversal of 31444123 is 32144413.

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, and also an emirpimes, since its reverse is a distinct semiprime: 32144413 = 7 ⋅4592059.

It is a cyclic number.

It is not a de Polignac number, because 31444123 - 2¹ = 31444121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31444094 and 31444103.

It is not an unprimeable number, because it can be changed into a prime (31444121) 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 3 ways as a sum of consecutive naturals, for example, 1536 + ... + 8077.

It is an arithmetic number, because the mean of its divisors is an integer number (7864252).

Almost surely, 2^31444123 is an apocalyptic number.

31444123 is a deficient number, since it is larger than the sum of its proper divisors (12885).

31444123 is an equidigital number, since it uses as much as digits as its factorization.

31444123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12884.

The product of its digits is 1152, while the sum is 22.

The square root of 31444123 is about 5607.5059518470. The cubic root of 31444123 is about 315.6311290252.

Adding to 31444123 its reverse (32144413), we get a palindrome (63588536).

The spelling of 31444123 in words is "thirty-one million, four hundred forty-four thousand, one hundred twenty-three".