3131120001121 has 4 divisors (see below), whose sum is σ = 3578422858432. Its totient is φ = 2683817143812.

The previous prime is 3131120001101. The next prime is 3131120001133. The reversal of 3131120001121 is 1211000211313.

It is a happy number.

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 not a de Polignac number, because 3131120001121 - 2²⁵ = 3131086446689 is a prime.

It is a super-2 number, since 2×3131120001121² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3131120001095 and 3131120001104.

It is not an unprimeable number, because it can be changed into a prime (3131120001101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 223651428645 + ... + 223651428658.

It is an arithmetic number, because the mean of its divisors is an integer number (894605714608).

Almost surely, 2^{3131120001121} is an apocalyptic number.

It is an amenable number.

3131120001121 is a deficient number, since it is larger than the sum of its proper divisors (447302857311).

3131120001121 is an equidigital number, since it uses as much as digits as its factorization.

3131120001121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447302857310.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 3131120001121 its reverse (1211000211313), we get a palindrome (4342120212434).

The spelling of 3131120001121 in words is "three trillion, one hundred thirty-one billion, one hundred twenty million, one thousand, one hundred twenty-one".