31122310121 has 8 divisors (see below), whose sum is σ = 35684214720. Its totient is φ = 26589370608.

The previous prime is 31122310081. The next prime is 31122310133. The reversal of 31122310121 is 12101322113.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31122310121 - 2¹⁸ = 31122047977 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31122310121.

It is not an unprimeable number, because it can be changed into a prime (31122310171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7238966 + ... + 7243263.

It is an arithmetic number, because the mean of its divisors is an integer number (4460526840).

Almost surely, 2^31122310121 is an apocalyptic number.

It is an amenable number.

31122310121 is a deficient number, since it is larger than the sum of its proper divisors (4561904599).

31122310121 is a wasteful number, since it uses less digits than its factorization.

31122310121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14482543.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 31122310121 its reverse (12101322113), we get a palindrome (43223632234).

The spelling of 31122310121 in words is "thirty-one billion, one hundred twenty-two million, three hundred ten thousand, one hundred twenty-one".