220331302381 has 2 divisors, whose sum is σ = 220331302382. Its totient is φ = 220331302380.

The previous prime is 220331302369. The next prime is 220331302417. The reversal of 220331302381 is 183203133022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 188956265481 + 31375036900 = 434691^2 + 177130^2 .

It is a cyclic number.

It is not a de Polignac number, because 220331302381 - 2²⁹ = 219794431469 is a prime.

It is a super-2 number, since 2×220331302381² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220331302181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110165651190 + 110165651191.

It is an arithmetic number, because the mean of its divisors is an integer number (110165651191).

Almost surely, 2^220331302381 is an apocalyptic number.

It is an amenable number.

220331302381 is a deficient number, since it is larger than the sum of its proper divisors (1).

220331302381 is an equidigital number, since it uses as much as digits as its factorization.

220331302381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 28.

The spelling of 220331302381 in words is "two hundred twenty billion, three hundred thirty-one million, three hundred two thousand, three hundred eighty-one".