1331222330 has 16 divisors (see below), whose sum is σ = 2431965600. Its totient is φ = 524541072.

The previous prime is 1331222329. The next prime is 1331222363. The reversal of 1331222330 is 332221331.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 992780 + ... + 994119.

It is an arithmetic number, because the mean of its divisors is an integer number (151997850).

Almost surely, 2^1331222330 is an apocalyptic number.

1331222330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1331222330 is a deficient number, since it is larger than the sum of its proper divisors (1100743270).

1331222330 is a wasteful number, since it uses less digits than its factorization.

1331222330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1986973.

The product of its (nonzero) digits is 648, while the sum is 20.

The square root of 1331222330 is about 36485.9196129137. The cubic root of 1331222330 is about 1100.0612445239.

Adding to 1331222330 its reverse (332221331), we get a palindrome (1663443661).

Subtracting from 1331222330 its reverse (332221331), we obtain a palindrome (999000999).

The spelling of 1331222330 in words is "one billion, three hundred thirty-one million, two hundred twenty-two thousand, three hundred thirty".