31344331110021 has 40 divisors (see below), whose sum is σ = 47559030097920. Its totient is φ = 20568238206912.

The previous prime is 31344331110019. The next prime is 31344331110151. The reversal of 31344331110021 is 12001113344313.

31344331110021 is a `hidden beast` number, since 3 + 1 + 344 + 3 + 311 + 1 + 0 + 0 + 2 + 1 = 666.

It is not a de Polignac number, because 31344331110021 - 2¹ = 31344331110019 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31344331110821) 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 39 ways as a sum of consecutive naturals, for example, 4683265 + ... + 9199001.

It is an arithmetic number, because the mean of its divisors is an integer number (1188975752448).

Almost surely, 2^{31344331110021} is an apocalyptic number.

It is an amenable number.

31344331110021 is a deficient number, since it is larger than the sum of its proper divisors (16214698987899).

31344331110021 is a wasteful number, since it uses less digits than its factorization.

31344331110021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4517095 (or 4517086 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

Adding to 31344331110021 its reverse (12001113344313), we get a palindrome (43345444454334).

The spelling of 31344331110021 in words is "thirty-one trillion, three hundred forty-four billion, three hundred thirty-one million, one hundred ten thousand, twenty-one".