1331204140 has 24 divisors (see below), whose sum is σ = 3194890272. Its totient is φ = 456412800.

The previous prime is 1331204137. The next prime is 1331204141. The reversal of 1331204140 is 414021331.

It is not an unprimeable number, because it can be changed into a prime (1331204141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4754161 + ... + 4754440.

It is an arithmetic number, because the mean of its divisors is an integer number (133120428).

Almost surely, 2^1331204140 is an apocalyptic number.

1331204140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1331204140 is an abundant number, since it is smaller than the sum of its proper divisors (1863686132).

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

1331204140 is a wasteful number, since it uses less digits than its factorization.

1331204140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9508617 (or 9508615 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1331204140 is about 36485.6703378189. The cubic root of 1331204140 is about 1100.0562340398.

Adding to 1331204140 its reverse (414021331), we get a palindrome (1745225471).

The spelling of 1331204140 in words is "one billion, three hundred thirty-one million, two hundred four thousand, one hundred forty".