31252723 has 4 divisors (see below), whose sum is σ = 31266520. Its totient is φ = 31238928.

The previous prime is 31252717. The next prime is 31252769. The reversal of 31252723 is 32725213.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 31252723 - 2⁹ = 31252211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31252223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2613 + ... + 8326.

It is an arithmetic number, because the mean of its divisors is an integer number (7816630).

Almost surely, 2^31252723 is an apocalyptic number.

31252723 is a deficient number, since it is larger than the sum of its proper divisors (13797).

31252723 is a wasteful number, since it uses less digits than its factorization.

31252723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13796.

The product of its digits is 2520, while the sum is 25.

The square root of 31252723 is about 5590.4134909683. The cubic root of 31252723 is about 314.9894109147.

Adding to 31252723 its reverse (32725213), we get a palindrome (63977936).

It can be divided in two parts, 312 and 52723, that added together give a palindrome (53035).

The spelling of 31252723 in words is "thirty-one million, two hundred fifty-two thousand, seven hundred twenty-three".