31023313012321 has 8 divisors (see below), whose sum is σ = 35495186935680. Its totient is φ = 26561432105088.

The previous prime is 31023313012231. The next prime is 31023313012357. The reversal of 31023313012321 is 12321031332013.

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

It is a cyclic number.

It is not a de Polignac number, because 31023313012321 - 2¹³ = 31023313004129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31023313016321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2498247376 + ... + 2498259793.

It is an arithmetic number, because the mean of its divisors is an integer number (4436898366960).

Almost surely, 2^{31023313012321} is an apocalyptic number.

It is an amenable number.

31023313012321 is a deficient number, since it is larger than the sum of its proper divisors (4471873923359).

31023313012321 is an equidigital number, since it uses as much as digits as its factorization.

31023313012321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4996508063.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 31023313012321 its reverse (12321031332013), we get a palindrome (43344344344334).

The spelling of 31023313012321 in words is "thirty-one trillion, twenty-three billion, three hundred thirteen million, twelve thousand, three hundred twenty-one".