31252423 has 4 divisors (see below), whose sum is σ = 32611248. Its totient is φ = 29893600.

The previous prime is 31252421. The next prime is 31252447. The reversal of 31252423 is 32425213.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32425213 = 73 ⋅444181.

It is a cyclic number.

It is not a de Polignac number, because 31252423 - 2¹ = 31252421 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31252394 and 31252403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31252421) 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, 679378 + ... + 679423.

It is an arithmetic number, because the mean of its divisors is an integer number (8152812).

Almost surely, 2^31252423 is an apocalyptic number.

31252423 is a deficient number, since it is larger than the sum of its proper divisors (1358825).

31252423 is a wasteful number, since it uses less digits than its factorization.

31252423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1358824.

The product of its digits is 1440, while the sum is 22.

The square root of 31252423 is about 5590.3866592571. The cubic root of 31252423 is about 314.9884030332.

Adding to 31252423 its reverse (32425213), we get a palindrome (63677636).

The spelling of 31252423 in words is "thirty-one million, two hundred fifty-two thousand, four hundred twenty-three".