31421111044320 has 72 divisors (see below), whose sum is σ = 107224541443656. Its totient is φ = 8378962944768.

The previous prime is 31421111044313. The next prime is 31421111044327. The reversal of 31421111044320 is 2344011112413.

It is a happy number.

31421111044320 is a `hidden beast` number, since 3 + 1 + 4 + 211 + 1 + 1 + 0 + 443 + 2 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (31421111044313) and next prime (31421111044327).

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31421111044327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10910106562 + ... + 10910109441.

It is an arithmetic number, because the mean of its divisors is an integer number (1489229742273).

Almost surely, 2^{31421111044320} is an apocalyptic number.

31421111044320 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31421111044320 is an abundant number, since it is smaller than the sum of its proper divisors (75803430399336).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31421111044320 is a wasteful number, since it uses less digits than its factorization.

31421111044320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21820216024 (or 21820216013 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

Adding to 31421111044320 its reverse (2344011112413), we get a palindrome (33765122156733).

The spelling of 31421111044320 in words is "thirty-one trillion, four hundred twenty-one billion, one hundred eleven million, forty-four thousand, three hundred twenty".