31321212121323 has 48 divisors (see below), whose sum is σ = 48325120496640. Its totient is φ = 19504950897600.

The previous prime is 31321212121307. The next prime is 31321212121343. The reversal of 31321212121323 is 32312121212313.

31321212121323 is a `hidden beast` number, since 3 + 1 + 3 + 2 + 1 + 212 + 121 + 323 = 666.

It is not a de Polignac number, because 31321212121323 - 2⁴ = 31321212121307 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31321212121343) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 28350940 + ... + 29434982.

It is an arithmetic number, because the mean of its divisors is an integer number (1006773343680).

Almost surely, 2^{31321212121323} is an apocalyptic number.

31321212121323 is a deficient number, since it is larger than the sum of its proper divisors (17003908375317).

31321212121323 is a wasteful number, since it uses less digits than its factorization.

31321212121323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1087680 (or 1087677 counting only the distinct ones).

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

Adding to 31321212121323 its reverse (32312121212313), we get a palindrome (63633333333636).

The spelling of 31321212121323 in words is "thirty-one trillion, three hundred twenty-one billion, two hundred twelve million, one hundred twenty-one thousand, three hundred twenty-three".