3031331320121 has 32 divisors (see below), whose sum is σ = 3328162390560. Its totient is φ = 2744047632384.

The previous prime is 3031331320033. The next prime is 3031331320123. The reversal of 3031331320121 is 1210231331303.

It can be written as a sum of positive squares in 16 ways, for example, as 993632169721 + 2037699150400 = 996811^2 + 1427480^2 .

It is a cyclic number.

It is not a de Polignac number, because 3031331320121 - 2³⁸ = 2756453413177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3031331320123) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 486645035 + ... + 486651263.

It is an arithmetic number, because the mean of its divisors is an integer number (104005074705).

Almost surely, 2^{3031331320121} is an apocalyptic number.

It is an amenable number.

3031331320121 is a deficient number, since it is larger than the sum of its proper divisors (296831070439).

3031331320121 is a wasteful number, since it uses less digits than its factorization.

3031331320121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9165.

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 3031331320121 its reverse (1210231331303), we get a palindrome (4241562651424).

The spelling of 3031331320121 in words is "three trillion, thirty-one billion, three hundred thirty-one million, three hundred twenty thousand, one hundred twenty-one".