1331212304 has 10 divisors (see below), whose sum is σ = 2579223870. Its totient is φ = 665606144.

The previous prime is 1331212301. The next prime is 1331212367. The reversal of 1331212304 is 4032121331.

It can be written as a sum of positive squares in only one way, i.e., 1328456704 + 2755600 = 36448^2 + 1660^2 .

It is not an unprimeable number, because it can be changed into a prime (1331212301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41600369 + ... + 41600400.

It is an arithmetic number, because the mean of its divisors is an integer number (257922387).

Almost surely, 2^1331212304 is an apocalyptic number.

It is an amenable number.

1331212304 is a deficient number, since it is larger than the sum of its proper divisors (1248011566).

1331212304 is an equidigital number, since it uses as much as digits as its factorization.

1331212304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83200777 (or 83200771 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 1331212304 is about 36485.7822171870. The cubic root of 1331212304 is about 1100.0584828410.

Adding to 1331212304 its reverse (4032121331), we get a palindrome (5363333635).

The spelling of 1331212304 in words is "one billion, three hundred thirty-one million, two hundred twelve thousand, three hundred four".