220331002 has 4 divisors (see below), whose sum is σ = 330496506. Its totient is φ = 110165500.

The previous prime is 220330997. The next prime is 220331003. The reversal of 220331002 is 200133022.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 200133022 = 2 ⋅100066511.

It can be written as a sum of positive squares in only one way, i.e., 157778721 + 62552281 = 12561^2 + 7909^2 .

It is not an unprimeable number, because it can be changed into a prime (220331003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55082749 + ... + 55082752.

Almost surely, 2^220331002 is an apocalyptic number.

220331002 is a deficient number, since it is larger than the sum of its proper divisors (110165504).

220331002 is a wasteful number, since it uses less digits than its factorization.

220331002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110165503.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 220331002 is about 14843.5508555062. The cubic root of 220331002 is about 603.9836790029.

Adding to 220331002 its reverse (200133022), we get a palindrome (420464024).

The spelling of 220331002 in words is "two hundred twenty million, three hundred thirty-one thousand, two".