1331140405 has 8 divisors (see below), whose sum is σ = 1825564032. Its totient is φ = 912781968.

The previous prime is 1331140381. The next prime is 1331140423. The reversal of 1331140405 is 5040411331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1331140405 - 2⁷ = 1331140277 is a prime.

It is a super-3 number, since 3×1331140405³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19016257 + ... + 19016326.

It is an arithmetic number, because the mean of its divisors is an integer number (228195504).

Almost surely, 2^1331140405 is an apocalyptic number.

It is an amenable number.

1331140405 is a deficient number, since it is larger than the sum of its proper divisors (494423627).

1331140405 is an equidigital number, since it uses as much as digits as its factorization.

1331140405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38032595.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 1331140405 is about 36484.7969022715. The cubic root of 1331140405 is about 1100.0386777034.

Adding to 1331140405 its reverse (5040411331), we get a palindrome (6371551736).

The spelling of 1331140405 in words is "one billion, three hundred thirty-one million, one hundred forty thousand, four hundred five".