1311240324151 has 4 divisors (see below), whose sum is σ = 1314268593232. Its totient is φ = 1308212055072.

The previous prime is 1311240324143. The next prime is 1311240324193. The reversal of 1311240324151 is 1514230421131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1311240324151 - 2³ = 1311240324143 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 (1311240324851) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1514133891 + ... + 1514134756.

It is an arithmetic number, because the mean of its divisors is an integer number (328567148308).

Almost surely, 2^{1311240324151} is an apocalyptic number.

1311240324151 is a deficient number, since it is larger than the sum of its proper divisors (3028269081).

1311240324151 is an equidigital number, since it uses as much as digits as its factorization.

1311240324151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3028269080.

The product of its (nonzero) digits is 2880, while the sum is 28.

Adding to 1311240324151 its reverse (1514230421131), we get a palindrome (2825470745282).

The spelling of 1311240324151 in words is "one trillion, three hundred eleven billion, two hundred forty million, three hundred twenty-four thousand, one hundred fifty-one".