31140214 has 16 divisors (see below), whose sum is σ = 53486496. Its totient is φ = 13320000.

The previous prime is 31140191. The next prime is 31140233. The reversal of 31140214 is 41204113.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6564 + ... + 10264.

It is an arithmetic number, because the mean of its divisors is an integer number (3342906).

Almost surely, 2^31140214 is an apocalyptic number.

31140214 is a deficient number, since it is larger than the sum of its proper divisors (22346282).

31140214 is a wasteful number, since it uses less digits than its factorization.

31140214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4311.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 31140214 is about 5580.3417458073. The cubic root of 31140214 is about 314.6109718311.

Adding to 31140214 its reverse (41204113), we get a palindrome (72344327).

The spelling of 31140214 in words is "thirty-one million, one hundred forty thousand, two hundred fourteen".