232120220131 has 4 divisors (see below), whose sum is σ = 238393739632. Its totient is φ = 225846700632.

The previous prime is 232120220117. The next prime is 232120220141. The reversal of 232120220131 is 131022021232.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 232120220131 - 2²¹ = 232118122979 is a prime.

It is a super-2 number, since 2×232120220131² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 232120220099 and 232120220108.

It is not an unprimeable number, because it can be changed into a prime (232120220141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3136759695 + ... + 3136759768.

It is an arithmetic number, because the mean of its divisors is an integer number (59598434908).

Almost surely, 2^232120220131 is an apocalyptic number.

232120220131 is a deficient number, since it is larger than the sum of its proper divisors (6273519501).

232120220131 is an equidigital number, since it uses as much as digits as its factorization.

232120220131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6273519500.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 232120220131 its reverse (131022021232), we get a palindrome (363142241363).

The spelling of 232120220131 in words is "two hundred thirty-two billion, one hundred twenty million, two hundred twenty thousand, one hundred thirty-one".