31332202121 has 16 divisors (see below), whose sum is σ = 36564333120. Its totient is φ = 26531911680.

The previous prime is 31332202117. The next prime is 31332202129. The reversal of 31332202121 is 12120223313.

It is a cyclic number.

It is not a de Polignac number, because 31332202121 - 2² = 31332202117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31332202093 and 31332202102.

It is not an unprimeable number, because it can be changed into a prime (31332202129) 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 15 ways as a sum of consecutive naturals, for example, 845531 + ... + 881808.

It is an arithmetic number, because the mean of its divisors is an integer number (2285270820).

Almost surely, 2^31332202121 is an apocalyptic number.

It is an amenable number.

31332202121 is a deficient number, since it is larger than the sum of its proper divisors (5232130999).

31332202121 is a wasteful number, since it uses less digits than its factorization.

31332202121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1727464.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 31332202121 its reverse (12120223313), we get a palindrome (43452425434).

The spelling of 31332202121 in words is "thirty-one billion, three hundred thirty-two million, two hundred two thousand, one hundred twenty-one".