31302214 has 8 divisors (see below), whose sum is σ = 47749320. Its totient is φ = 15385776.

The previous prime is 31302209. The next prime is 31302217. The reversal of 31302214 is 41220313.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31302217) 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, 132519 + ... + 132754.

It is an arithmetic number, because the mean of its divisors is an integer number (5968665).

Almost surely, 2^31302214 is an apocalyptic number.

31302214 is a deficient number, since it is larger than the sum of its proper divisors (16447106).

31302214 is a wasteful number, since it uses less digits than its factorization.

31302214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265334.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 31302214 is about 5594.8381567298. The cubic root of 31302214 is about 315.1555929070.

Adding to 31302214 its reverse (41220313), we get a palindrome (72522527).

The spelling of 31302214 in words is "thirty-one million, three hundred two thousand, two hundred fourteen".