11311531120355 has 8 divisors (see below), whose sum is σ = 14164004185632. Its totient is φ = 8655780335488.

The previous prime is 11311531120313. The next prime is 11311531120361. The reversal of 11311531120355 is 55302113511311.

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

It is not a de Polignac number, because 11311531120355 - 2¹⁰ = 11311531119331 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49180569974 + ... + 49180570203.

It is an arithmetic number, because the mean of its divisors is an integer number (1770500523204).

Almost surely, 2^{11311531120355} is an apocalyptic number.

11311531120355 is a deficient number, since it is larger than the sum of its proper divisors (2852473065277).

11311531120355 is an equidigital number, since it uses as much as digits as its factorization.

11311531120355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98361140205.

The product of its (nonzero) digits is 6750, while the sum is 32.

Adding to 11311531120355 its reverse (55302113511311), we get a palindrome (66613644631666).

The spelling of 11311531120355 in words is "eleven trillion, three hundred eleven billion, five hundred thirty-one million, one hundred twenty thousand, three hundred fifty-five".