220232312031 has 16 divisors (see below), whose sum is σ = 304807062528. Its totient is φ = 141341973600.

The previous prime is 220232312029. The next prime is 220232312039. The reversal of 220232312031 is 130213232022.

It is a happy number.

It is not a de Polignac number, because 220232312031 - 2¹ = 220232312029 is a prime.

It is a super-2 number, since 2×220232312031² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 220232311989 and 220232312007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220232312039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12794115 + ... + 12811316.

It is an arithmetic number, because the mean of its divisors is an integer number (19050441408).

Almost surely, 2^220232312031 is an apocalyptic number.

220232312031 is a deficient number, since it is larger than the sum of its proper divisors (84574750497).

220232312031 is a wasteful number, since it uses less digits than its factorization.

220232312031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25605542.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 220232312031 its reverse (130213232022), we get a palindrome (350445544053).

The spelling of 220232312031 in words is "two hundred twenty billion, two hundred thirty-two million, three hundred twelve thousand, thirty-one".