1311230660454 has 96 divisors (see below), whose sum is σ = 3338710790688. Its totient is φ = 366664320000.

The previous prime is 1311230660447. The next prime is 1311230660561. The reversal of 1311230660454 is 4540660321131.

1311230660454 is a `hidden beast` number, since 1 + 3 + 1 + 12 + 30 + 6 + 604 + 5 + 4 = 666.

It is a super-2 number, since 2×1311230660454² (a number of 25 digits) contains 22 as substring.

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 47 ways as a sum of consecutive naturals, for example, 8419614 + ... + 8573934.

It is an arithmetic number, because the mean of its divisors is an integer number (34778237403).

Almost surely, 2^{1311230660454} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1311230660454, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1669355395344).

1311230660454 is an abundant number, since it is smaller than the sum of its proper divisors (2027480130234).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1311230660454 is a wasteful number, since it uses less digits than its factorization.

1311230660454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157654 (or 157651 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

Adding to 1311230660454 its reverse (4540660321131), we get a palindrome (5851890981585).

The spelling of 1311230660454 in words is "one trillion, three hundred eleven billion, two hundred thirty million, six hundred sixty thousand, four hundred fifty-four".