1311100455 has 16 divisors (see below), whose sum is σ = 2397441024. Its totient is φ = 599360160.

The previous prime is 1311100451. The next prime is 1311100477. The reversal of 1311100455 is 5540011131.

It is a happy number.

1311100455 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1311100455 - 2² = 1311100451 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311100451) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6243231 + ... + 6243440.

It is an arithmetic number, because the mean of its divisors is an integer number (149840064).

Almost surely, 2^1311100455 is an apocalyptic number.

1311100455 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1311100455 is a deficient number, since it is larger than the sum of its proper divisors (1086340569).

1311100455 is a wasteful number, since it uses less digits than its factorization.

1311100455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12486686.

The product of its (nonzero) digits is 300, while the sum is 21.

The square root of 1311100455 is about 36209.1211575205. The cubic root of 1311100455 is about 1094.4904824947.

Adding to 1311100455 its reverse (5540011131), we get a palindrome (6851111586).

The spelling of 1311100455 in words is "one billion, three hundred eleven million, one hundred thousand, four hundred fifty-five".