31748423 has 12 divisors (see below), whose sum is σ = 37059120. Its totient is φ = 27198528.

The previous prime is 31748407. The next prime is 31748459. The reversal of 31748423 is 32484713.

It is not a de Polignac number, because 31748423 - 2⁴ = 31748407 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31748423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31748023) 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, 15863 + ... + 17751.

It is an arithmetic number, because the mean of its divisors is an integer number (3088260).

Almost surely, 2^31748423 is an apocalyptic number.

31748423 is a deficient number, since it is larger than the sum of its proper divisors (5310697).

31748423 is an frugal number, since it uses more digits than its factorization.

31748423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1924 (or 1896 counting only the distinct ones).

The product of its digits is 16128, while the sum is 32.

The square root of 31748423 is about 5634.5738969331. The cubic root of 31748423 is about 316.6460338665.

The spelling of 31748423 in words is "thirty-one million, seven hundred forty-eight thousand, four hundred twenty-three".