1101313155 has 16 divisors (see below), whose sum is σ = 1762621344. Its totient is φ = 587193600.

The previous prime is 1101313153. The next prime is 1101313189. The reversal of 1101313155 is 5513131011.

It is not a de Polignac number, because 1101313155 - 2¹ = 1101313153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1101313153) 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, 54277 + ... + 71753.

It is an arithmetic number, because the mean of its divisors is an integer number (110163834).

Almost surely, 2^1101313155 is an apocalyptic number.

1101313155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1101313155 is a deficient number, since it is larger than the sum of its proper divisors (661308189).

1101313155 is a wasteful number, since it uses less digits than its factorization.

1101313155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21686.

The product of its (nonzero) digits is 225, while the sum is 21.

The square root of 1101313155 is about 33186.0385553925. The cubic root of 1101313155 is about 1032.6907229554.

Adding to 1101313155 its reverse (5513131011), we get a palindrome (6614444166).

The spelling of 1101313155 in words is "one billion, one hundred one million, three hundred thirteen thousand, one hundred fifty-five".