1331141405 has 16 divisors (see below), whose sum is σ = 1762171200. Its totient is φ = 957221760.

The previous prime is 1331141377. The next prime is 1331141419. The reversal of 1331141405 is 5041411331.

It is a happy number.

It is not a de Polignac number, because 1331141405 - 2¹⁰ = 1331140381 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 131075 + ... + 140864.

It is an arithmetic number, because the mean of its divisors is an integer number (110135700).

Almost surely, 2^1331141405 is an apocalyptic number.

It is an amenable number.

1331141405 is a deficient number, since it is larger than the sum of its proper divisors (431029795).

1331141405 is a wasteful number, since it uses less digits than its factorization.

1331141405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272044.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 1331141405 is about 36484.8106066072. The cubic root of 1331141405 is about 1100.0389531660.

Adding to 1331141405 its reverse (5041411331), we get a palindrome (6372552736).

The spelling of 1331141405 in words is "one billion, three hundred thirty-one million, one hundred forty-one thousand, four hundred five".