331131131200121 has 4 divisors (see below), whose sum is σ = 378435578514432. Its totient is φ = 283826683885812.

The previous prime is 331131131200099. The next prime is 331131131200127. The reversal of 331131131200121 is 121002131131133.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 331131131200121 - 2¹⁴ = 331131131183737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (331131131200127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23652223657145 + ... + 23652223657158.

It is an arithmetic number, because the mean of its divisors is an integer number (94608894628608).

Almost surely, 2^{331131131200121} is an apocalyptic number.

It is an amenable number.

331131131200121 is a deficient number, since it is larger than the sum of its proper divisors (47304447314311).

331131131200121 is an equidigital number, since it uses as much as digits as its factorization.

331131131200121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47304447314310.

The product of its (nonzero) digits is 324, while the sum is 23.

Adding to 331131131200121 its reverse (121002131131133), we get a palindrome (452133262331254).

The spelling of 331131131200121 in words is "three hundred thirty-one trillion, one hundred thirty-one billion, one hundred thirty-one million, two hundred thousand, one hundred twenty-one".