31011214 has 16 divisors (see below), whose sum is σ = 50192352. Its totient is φ = 14285088.

The previous prime is 31011209. The next prime is 31011223. The reversal of 31011214 is 41211013.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a junction number, because it is equal to n+sod(n) for n = 31011194 and 31011203.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 19327 + ... + 20869.

It is an arithmetic number, because the mean of its divisors is an integer number (3137022).

Almost surely, 2^31011214 is an apocalyptic number.

31011214 is a deficient number, since it is larger than the sum of its proper divisors (19181138).

31011214 is a wasteful number, since it uses less digits than its factorization.

31011214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2331.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 31011214 is about 5568.7713187022. The cubic root of 31011214 is about 314.1759396432.

Adding to 31011214 its reverse (41211013), we get a palindrome (72222227).

It can be divided in two parts, 3101121 and 4, that multiplied together give a square (12404484 = 3522²).

The spelling of 31011214 in words is "thirty-one million, eleven thousand, two hundred fourteen".