1311630400155 has 8 divisors (see below), whose sum is σ = 2098608640272. Its totient is φ = 699536213408.

The previous prime is 1311630400151. The next prime is 1311630400187. The reversal of 1311630400155 is 5510040361131.

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 1311630400155 - 2² = 1311630400151 is a prime.

It is a super-2 number, since 2×1311630400155² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1311630400151) 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, 43721013324 + ... + 43721013353.

It is an arithmetic number, because the mean of its divisors is an integer number (262326080034).

Almost surely, 2^{1311630400155} is an apocalyptic number.

1311630400155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1311630400155 is a deficient number, since it is larger than the sum of its proper divisors (786978240117).

1311630400155 is an equidigital number, since it uses as much as digits as its factorization.

1311630400155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87442026685.

The product of its (nonzero) digits is 5400, while the sum is 30.

Adding to 1311630400155 its reverse (5510040361131), we get a palindrome (6821670761286).

The spelling of 1311630400155 in words is "one trillion, three hundred eleven billion, six hundred thirty million, four hundred thousand, one hundred fifty-five".