11231311255 has 64 divisors (see below), whose sum is σ = 15168384000. Its totient is φ = 7946975232.

The previous prime is 11231311241. The next prime is 11231311283. The reversal of 11231311255 is 55211313211.

It is a cyclic number.

It is not a de Polignac number, because 11231311255 - 2²³ = 11222922647 is a prime.

It is a super-2 number, since 2×11231311255² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 13386126 + ... + 13386964.

It is an arithmetic number, because the mean of its divisors is an integer number (237006000).

Almost surely, 2^11231311255 is an apocalyptic number.

11231311255 is a deficient number, since it is larger than the sum of its proper divisors (3937072745).

11231311255 is a wasteful number, since it uses less digits than its factorization.

11231311255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1048.

The product of its digits is 900, while the sum is 25.

Adding to 11231311255 its reverse (55211313211), we get a palindrome (66442624466).

The spelling of 11231311255 in words is "eleven billion, two hundred thirty-one million, three hundred eleven thousand, two hundred fifty-five".