1331220302 has 16 divisors (see below), whose sum is σ = 2006811072. Its totient is φ = 662291040.

The previous prime is 1331220301. The next prime is 1331220323. The reversal of 1331220302 is 2030221331.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331220301) 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, 479723 + ... + 482489.

It is an arithmetic number, because the mean of its divisors is an integer number (125425692).

Almost surely, 2^1331220302 is an apocalyptic number.

1331220302 is a deficient number, since it is larger than the sum of its proper divisors (675590770).

1331220302 is a wasteful number, since it uses less digits than its factorization.

1331220302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3883.

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

The square root of 1331220302 is about 36485.8918213602. The cubic root of 1331220302 is about 1100.0606859082.

Adding to 1331220302 its reverse (2030221331), we get a palindrome (3361441633).

The spelling of 1331220302 in words is "one billion, three hundred thirty-one million, two hundred twenty thousand, three hundred two".