1331061204 has 48 divisors (see below), whose sum is σ = 3431070720. Its totient is φ = 398243040.

The previous prime is 1331061191. The next prime is 1331061241. The reversal of 1331061204 is 4021601331.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53394 + ... + 74249.

It is an arithmetic number, because the mean of its divisors is an integer number (71480640).

Almost surely, 2^1331061204 is an apocalyptic number.

It is an amenable number.

1331061204 is an abundant number, since it is smaller than the sum of its proper divisors (2100009516).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1331061204 is a wasteful number, since it uses less digits than its factorization.

1331061204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127740 (or 127738 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 1331061204 is about 36483.7114888274. The cubic root of 1331061204 is about 1100.0168603476.

Adding to 1331061204 its reverse (4021601331), we get a palindrome (5352662535).

The spelling of 1331061204 in words is "one billion, three hundred thirty-one million, sixty-one thousand, two hundred four".