31423263 has 8 divisors (see below), whose sum is σ = 42053376. Its totient is φ = 20871000.

The previous prime is 31423253. The next prime is 31423291. The reversal of 31423263 is 36232413.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 31423263 - 2¹³ = 31415071 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31423253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18513 + ... + 20138.

It is an arithmetic number, because the mean of its divisors is an integer number (5256672).

Almost surely, 2^31423263 is an apocalyptic number.

31423263 is a deficient number, since it is larger than the sum of its proper divisors (10630113).

31423263 is a wasteful number, since it uses less digits than its factorization.

31423263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38925.

The product of its digits is 2592, while the sum is 24.

The square root of 31423263 is about 5605.6456363206. The cubic root of 31423263 is about 315.5613171259.

Adding to 31423263 its reverse (36232413), we get a palindrome (67655676).

The spelling of 31423263 in words is "thirty-one million, four hundred twenty-three thousand, two hundred sixty-three".