31112140321 has 8 divisors (see below), whose sum is σ = 31871771360. Its totient is φ = 30354149952.

The previous prime is 31112140303. The next prime is 31112140327. The reversal of 31112140321 is 12304121113.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 31112140321 - 2⁹ = 31112139809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31112140327) 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 7 ways as a sum of consecutive naturals, for example, 371736 + ... + 447673.

It is an arithmetic number, because the mean of its divisors is an integer number (3983971420).

Almost surely, 2^31112140321 is an apocalyptic number.

It is an amenable number.

31112140321 is a deficient number, since it is larger than the sum of its proper divisors (759631039).

31112140321 is an equidigital number, since it uses as much as digits as its factorization.

31112140321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 820335.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 31112140321 its reverse (12304121113), we get a palindrome (43416261434).

The spelling of 31112140321 in words is "thirty-one billion, one hundred twelve million, one hundred forty thousand, three hundred twenty-one".