31221304140019 has 16 divisors (see below), whose sum is σ = 36287206813440. Its totient is φ = 26306854192800.

The previous prime is 31221304139957. The next prime is 31221304140031. The reversal of 31221304140019 is 91004140312213.

It is a cyclic number.

It is not a de Polignac number, because 31221304140019 - 2³⁷ = 31083865186547 is a prime.

It is a super-2 number, since 2×31221304140019² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31221304140119) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 15209169 + ... + 17139469.

It is an arithmetic number, because the mean of its divisors is an integer number (2267950425840).

Almost surely, 2^{31221304140019} is an apocalyptic number.

31221304140019 is a deficient number, since it is larger than the sum of its proper divisors (5065902673421).

31221304140019 is a wasteful number, since it uses less digits than its factorization.

31221304140019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1969530.

The product of its (nonzero) digits is 5184, while the sum is 31.

The spelling of 31221304140019 in words is "thirty-one trillion, two hundred twenty-one billion, three hundred four million, one hundred forty thousand, nineteen".