331313010121 has 4 divisors (see below), whose sum is σ = 331319746512. Its totient is φ = 331306273732.

The previous prime is 331313010103. The next prime is 331313010139. The reversal of 331313010121 is 121010313133.

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, and also an emirpimes, since its reverse is a distinct semiprime: 121010313133 = 97861 ⋅1236553.

It is an interprime number because it is at equal distance from previous prime (331313010103) and next prime (331313010139).

It is a cyclic number.

It is not a de Polignac number, because 331313010121 - 2¹¹ = 331313008073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (331313010521) 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, 3293875 + ... + 3392968.

It is an arithmetic number, because the mean of its divisors is an integer number (82829936628).

Almost surely, 2^331313010121 is an apocalyptic number.

It is an amenable number.

331313010121 is a deficient number, since it is larger than the sum of its proper divisors (6736391).

331313010121 is an equidigital number, since it uses as much as digits as its factorization.

331313010121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6736390.

The product of its (nonzero) digits is 162, while the sum is 19.

Adding to 331313010121 its reverse (121010313133), we get a palindrome (452323323254).

The spelling of 331313010121 in words is "three hundred thirty-one billion, three hundred thirteen million, ten thousand, one hundred twenty-one".