31105323214 has 16 divisors (see below), whose sum is σ = 54053870688. Its totient is φ = 13148237952.

The previous prime is 31105323209. The next prime is 31105323253. The reversal of 31105323214 is 41232350113.

It is a happy number.

It is a super-2 number, since 2×31105323214² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15216847 + ... + 15218890.

It is an arithmetic number, because the mean of its divisors is an integer number (3378366918).

Almost surely, 2^31105323214 is an apocalyptic number.

31105323214 is a deficient number, since it is larger than the sum of its proper divisors (22948547474).

31105323214 is a wasteful number, since it uses less digits than its factorization.

31105323214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30435819.

The product of its (nonzero) digits is 2160, while the sum is 25.

Adding to 31105323214 its reverse (41232350113), we get a palindrome (72337673327).

The spelling of 31105323214 in words is "thirty-one billion, one hundred five million, three hundred twenty-three thousand, two hundred fourteen".