31423214 has 4 divisors (see below), whose sum is σ = 47134824. Its totient is φ = 15711606.

The previous prime is 31423187. The next prime is 31423237. The reversal of 31423214 is 41232413.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 41232413 = 19 ⋅2170127.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 7855802 + ... + 7855805.

It is an arithmetic number, because the mean of its divisors is an integer number (11783706).

Almost surely, 2^31423214 is an apocalyptic number.

31423214 is a deficient number, since it is larger than the sum of its proper divisors (15711610).

31423214 is a wasteful number, since it uses less digits than its factorization.

31423214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15711609.

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

The square root of 31423214 is about 5605.6412657251. The cubic root of 31423214 is about 315.5611531019.

Adding to 31423214 its reverse (41232413), we get a palindrome (72655627).

The spelling of 31423214 in words is "thirty-one million, four hundred twenty-three thousand, two hundred fourteen".