220131001231 has 8 divisors (see below), whose sum is σ = 229707199584. Its totient is φ = 210555243360.

The previous prime is 220131001229. The next prime is 220131001243. The reversal of 220131001231 is 132100131022.

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 220131001231 - 2¹ = 220131001229 is a prime.

It is a super-2 number, since 2×220131001231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220131001931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1290045 + ... + 1450681.

It is an arithmetic number, because the mean of its divisors is an integer number (28713399948).

Almost surely, 2^220131001231 is an apocalyptic number.

220131001231 is a deficient number, since it is larger than the sum of its proper divisors (9576198353).

220131001231 is a wasteful number, since it uses less digits than its factorization.

220131001231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220241.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 220131001231 its reverse (132100131022), we get a palindrome (352231132253).

The spelling of 220131001231 in words is "two hundred twenty billion, one hundred thirty-one million, one thousand, two hundred thirty-one".