31221352035214 has 64 divisors (see below), whose sum is σ = 51492997721088. Its totient is φ = 14079985920000.

The previous prime is 31221352035187. The next prime is 31221352035281. The reversal of 31221352035214 is 41253025312213.

It is a super-2 number, since 2×31221352035214² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31221352035214.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1516104502 + ... + 1516125094.

It is an arithmetic number, because the mean of its divisors is an integer number (804578089392).

Almost surely, 2^{31221352035214} is an apocalyptic number.

31221352035214 is a deficient number, since it is larger than the sum of its proper divisors (20271645685874).

31221352035214 is a wasteful number, since it uses less digits than its factorization.

31221352035214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21913.

The product of its (nonzero) digits is 43200, while the sum is 34.

Adding to 31221352035214 its reverse (41253025312213), we get a palindrome (72474377347427).

The spelling of 31221352035214 in words is "thirty-one trillion, two hundred twenty-one billion, three hundred fifty-two million, thirty-five thousand, two hundred fourteen".