31311301232121 has 8 divisors (see below), whose sum is σ = 41749929374880. Its totient is φ = 20873436955392.

The previous prime is 31311301232119. The next prime is 31311301232129. The reversal of 31311301232121 is 12123210311313.

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

It is not a de Polignac number, because 31311301232121 - 2¹ = 31311301232119 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 31311301232091 and 31311301232100.

It is not an unprimeable number, because it can be changed into a prime (31311301232129) 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, 190870855 + ... + 191034828.

It is an arithmetic number, because the mean of its divisors is an integer number (5218741171860).

Almost surely, 2^{31311301232121} is an apocalyptic number.

It is an amenable number.

31311301232121 is a deficient number, since it is larger than the sum of its proper divisors (10438628142759).

31311301232121 is a wasteful number, since it uses less digits than its factorization.

31311301232121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381933015.

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

Adding to 31311301232121 its reverse (12123210311313), we get a palindrome (43434511543434).

The spelling of 31311301232121 in words is "thirty-one trillion, three hundred eleven billion, three hundred one million, two hundred thirty-two thousand, one hundred twenty-one".