3131102031121 has 4 divisors (see below), whose sum is σ = 3131105963044. Its totient is φ = 3131098099200.

The previous prime is 3131102031107. The next prime is 3131102031209. The reversal of 3131102031121 is 1211302011313.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 3021474821121 + 109627210000 = 1738239^2 + 331100^2 .

It is a cyclic number.

It is not a de Polignac number, because 3131102031121 - 2⁷ = 3131102030993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3131102034121) 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, 302040 + ... + 2520601.

It is an arithmetic number, because the mean of its divisors is an integer number (782776490761).

Almost surely, 2^{3131102031121} is an apocalyptic number.

It is an amenable number.

3131102031121 is a deficient number, since it is larger than the sum of its proper divisors (3931923).

3131102031121 is a wasteful number, since it uses less digits than its factorization.

3131102031121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3931922.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 3131102031121 its reverse (1211302011313), we get a palindrome (4342404042434).

The spelling of 3131102031121 in words is "three trillion, one hundred thirty-one billion, one hundred two million, thirty-one thousand, one hundred twenty-one".