31233234042121 has 2 divisors, whose sum is σ = 31233234042122. Its totient is φ = 31233234042120.

The previous prime is 31233234042091. The next prime is 31233234042161. The reversal of 31233234042121 is 12124043233213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27753815339721 + 3479418702400 = 5268189^2 + 1865320^2 .

It is a cyclic number.

It is not a de Polignac number, because 31233234042121 - 2⁷ = 31233234041993 is a prime.

It is a super-2 number, since 2×31233234042121² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (31233234042161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15616617021060 + 15616617021061.

It is an arithmetic number, because the mean of its divisors is an integer number (15616617021061).

Almost surely, 2^{31233234042121} is an apocalyptic number.

It is an amenable number.

31233234042121 is a deficient number, since it is larger than the sum of its proper divisors (1).

31233234042121 is an equidigital number, since it uses as much as digits as its factorization.

31233234042121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 31.

Adding to 31233234042121 its reverse (12124043233213), we get a palindrome (43357277275334).

The spelling of 31233234042121 in words is "thirty-one trillion, two hundred thirty-three billion, two hundred thirty-four million, forty-two thousand, one hundred twenty-one".