31231313121201 has 12 divisors (see below), whose sum is σ = 44235354687312. Its totient is φ = 19596118036288.

The previous prime is 31231313121181. The next prime is 31231313121233. The reversal of 31231313121201 is 10212131313213.

It is not a de Polignac number, because 31231313121201 - 2¹⁰ = 31231313120177 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31231313121101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18011137035 + ... + 18011138768.

It is an arithmetic number, because the mean of its divisors is an integer number (3686279557276).

Almost surely, 2^{31231313121201} is an apocalyptic number.

It is an amenable number.

31231313121201 is a deficient number, since it is larger than the sum of its proper divisors (13004041566111).

31231313121201 is a wasteful number, since it uses less digits than its factorization.

31231313121201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36022275840 (or 36022275823 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 24.

Adding to 31231313121201 its reverse (10212131313213), we get a palindrome (41443444434414).

The spelling of 31231313121201 in words is "thirty-one trillion, two hundred thirty-one billion, three hundred thirteen million, one hundred twenty-one thousand, two hundred one".