220310331331 has 4 divisors (see below), whose sum is σ = 221527515664. Its totient is φ = 219093147000.

The previous prime is 220310331317. The next prime is 220310331349. The reversal of 220310331331 is 133133013022.

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 220310331331 - 2⁷ = 220310331203 is a prime.

It is a super-2 number, since 2×220310331331² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220310131331) 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, 608591895 + ... + 608592256.

It is an arithmetic number, because the mean of its divisors is an integer number (55381878916).

Almost surely, 2^220310331331 is an apocalyptic number.

220310331331 is a deficient number, since it is larger than the sum of its proper divisors (1217184333).

220310331331 is a wasteful number, since it uses less digits than its factorization.

220310331331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1217184332.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 220310331331 its reverse (133133013022), we get a palindrome (353443344353).

The spelling of 220310331331 in words is "two hundred twenty billion, three hundred ten million, three hundred thirty-one thousand, three hundred thirty-one".