1311226240251 has 8 divisors (see below), whose sum is σ = 1790943157584. Its totient is φ = 852830074880.

The previous prime is 1311226240189. The next prime is 1311226240279. The reversal of 1311226240251 is 1520426221131.

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 1311226240251 - 2³¹ = 1309078756603 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1311226240451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5330187846 + ... + 5330188091.

It is an arithmetic number, because the mean of its divisors is an integer number (223867894698).

Almost surely, 2^{1311226240251} is an apocalyptic number.

1311226240251 is a deficient number, since it is larger than the sum of its proper divisors (479716917333).

1311226240251 is a wasteful number, since it uses less digits than its factorization.

1311226240251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10660375981.

The product of its (nonzero) digits is 5760, while the sum is 30.

The spelling of 1311226240251 in words is "one trillion, three hundred eleven billion, two hundred twenty-six million, two hundred forty thousand, two hundred fifty-one".