31355214 has 24 divisors (see below), whose sum is σ = 68931240. Its totient is φ = 9501360.

The previous prime is 31355197. The next prime is 31355221. The reversal of 31355214 is 41255313.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20869 + ... + 22320.

It is an arithmetic number, because the mean of its divisors is an integer number (2872135).

Almost surely, 2^31355214 is an apocalyptic number.

31355214 is an abundant number, since it is smaller than the sum of its proper divisors (37576026).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31355214 is a wasteful number, since it uses less digits than its factorization.

31355214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43216 (or 43205 counting only the distinct ones).

The product of its digits is 1800, while the sum is 24.

The square root of 31355214 is about 5599.5726622663. The cubic root of 31355214 is about 315.3333633796. Note that the first 4 decimals are identical.

Subtracting 31355214 from its reverse (41255313), we obtain a palindrome (9900099).

The spelling of 31355214 in words is "thirty-one million, three hundred fifty-five thousand, two hundred fourteen".