1331145361 has 16 divisors (see below), whose sum is σ = 1642032000. Its totient is φ = 1050835968.

The previous prime is 1331145359. The next prime is 1331145379. The reversal of 1331145361 is 1635411331.

It is not a de Polignac number, because 1331145361 - 2¹ = 1331145359 is a prime.

It is a super-2 number, since 2×1331145361² = 3543895944223640642, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1331145331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24570 + ... + 57148.

It is an arithmetic number, because the mean of its divisors is an integer number (102627000).

Almost surely, 2^1331145361 is an apocalyptic number.

It is an amenable number.

1331145361 is a deficient number, since it is larger than the sum of its proper divisors (310886639).

1331145361 is a wasteful number, since it uses less digits than its factorization.

1331145361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33048.

The product of its digits is 3240, while the sum is 28.

The square root of 1331145361 is about 36484.8648209090. The cubic root of 1331145361 is about 1100.0400428949.

Adding to 1331145361 its reverse (1635411331), we get a palindrome (2966556692).

The spelling of 1331145361 in words is "one billion, three hundred thirty-one million, one hundred forty-five thousand, three hundred sixty-one".