31133323132121 has 16 divisors (see below), whose sum is σ = 36563577722880. Its totient is φ = 25949556342720.

The previous prime is 31133323132073. The next prime is 31133323132139. The reversal of 31133323132121 is 12123132333113.

It is a cyclic number.

It is not a de Polignac number, because 31133323132121 - 2¹⁸ = 31133322869977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31133323132151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34071161 + ... + 34972998.

It is an arithmetic number, because the mean of its divisors is an integer number (2285223607680).

Almost surely, 2^{31133323132121} is an apocalyptic number.

It is an amenable number.

31133323132121 is a deficient number, since it is larger than the sum of its proper divisors (5430254590759).

31133323132121 is a wasteful number, since it uses less digits than its factorization.

31133323132121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69045944.

The product of its digits is 5832, while the sum is 29.

Adding to 31133323132121 its reverse (12123132333113), we get a palindrome (43256455465234).

The spelling of 31133323132121 in words is "thirty-one trillion, one hundred thirty-three billion, three hundred twenty-three million, one hundred thirty-two thousand, one hundred twenty-one".