1331215151 has 8 divisors (see below), whose sum is σ = 1550094624. Its totient is φ = 1119512160.

The previous prime is 1331215133. The next prime is 1331215181. The reversal of 1331215151 is 1515121331.

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

It is a cyclic number.

It is not a de Polignac number, because 1331215151 - 2⁶ = 1331215087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331215111) by changing a digit.

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, 1793720 + ... + 1794461.

It is an arithmetic number, because the mean of its divisors is an integer number (193761828).

Almost surely, 2^1331215151 is an apocalyptic number.

1331215151 is a deficient number, since it is larger than the sum of its proper divisors (218879473).

1331215151 is an equidigital number, since it uses as much as digits as its factorization.

1331215151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3588241.

The product of its digits is 450, while the sum is 23.

The square root of 1331215151 is about 36485.8212323637. The cubic root of 1331215151 is about 1100.0592670546.

Adding to 1331215151 its reverse (1515121331), we get a palindrome (2846336482).

The spelling of 1331215151 in words is "one billion, three hundred thirty-one million, two hundred fifteen thousand, one hundred fifty-one".