31412243 has 4 divisors (see below), whose sum is σ = 33260040. Its totient is φ = 29564448.

The previous prime is 31412239. The next prime is 31412257. The reversal of 31412243 is 34221413.

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 31412243 - 2² = 31412239 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31412233) 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 3 ways as a sum of consecutive naturals, for example, 923873 + ... + 923906.

It is an arithmetic number, because the mean of its divisors is an integer number (8315010).

Almost surely, 2^31412243 is an apocalyptic number.

31412243 is a deficient number, since it is larger than the sum of its proper divisors (1847797).

31412243 is a wasteful number, since it uses less digits than its factorization.

31412243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1847796.

The product of its digits is 576, while the sum is 20.

The square root of 31412243 is about 5604.6626125040. The cubic root of 31412243 is about 315.5244241579.

Adding to 31412243 its reverse (34221413), we get a palindrome (65633656).

The spelling of 31412243 in words is "thirty-one million, four hundred twelve thousand, two hundred forty-three".