213122330323131 has 16 divisors (see below), whose sum is σ = 302479948425600. Its totient is φ = 133091177300928.

The previous prime is 213122330323129. The next prime is 213122330323153. The reversal of 213122330323131 is 131323033221312.

It is not a de Polignac number, because 213122330323131 - 2¹ = 213122330323129 is a prime.

It is a super-2 number, since 2×213122330323131² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (213122330323531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21005546901 + ... + 21005557046.

It is an arithmetic number, because the mean of its divisors is an integer number (18904996776600).

Almost surely, 2^{213122330323131} is an apocalyptic number.

213122330323131 is a deficient number, since it is larger than the sum of its proper divisors (89357618102469).

213122330323131 is a wasteful number, since it uses less digits than its factorization.

213122330323131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42011104058.

The product of its (nonzero) digits is 11664, while the sum is 30.

Adding to 213122330323131 its reverse (131323033221312), we get a palindrome (344445363544443).

The spelling of 213122330323131 in words is "two hundred thirteen trillion, one hundred twenty-two billion, three hundred thirty million, three hundred twenty-three thousand, one hundred thirty-one".