1220230331 has 8 divisors (see below), whose sum is σ = 1303625280. Its totient is φ = 1138752648.

The previous prime is 1220230327. The next prime is 1220230337. The reversal of 1220230331 is 1330320221.

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 1220230331 - 2² = 1220230327 is a prime.

It is a super-2 number, since 2×1220230331² = 2977924121384739122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220230337) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 478001 + ... + 480546.

It is an arithmetic number, because the mean of its divisors is an integer number (162953160).

Almost surely, 2^1220230331 is an apocalyptic number.

1220230331 is a deficient number, since it is larger than the sum of its proper divisors (83394949).

1220230331 is an equidigital number, since it uses as much as digits as its factorization.

1220230331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 958633.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 1220230331 is about 34931.7954162107. The cubic root of 1220230331 is about 1068.5969705954.

Adding to 1220230331 its reverse (1330320221), we get a palindrome (2550550552).

The spelling of 1220230331 in words is "one billion, two hundred twenty million, two hundred thirty thousand, three hundred thirty-one".