11310505123 has 4 divisors (see below), whose sum is σ = 11342546568. Its totient is φ = 11278463680.

The previous prime is 11310505097. The next prime is 11310505169. The reversal of 11310505123 is 32150501311.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11310505123 - 2¹³ = 11310496931 is a prime.

It is a super-2 number, since 2×11310505123² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11310505094 and 11310505103.

It is not an unprimeable number, because it can be changed into a prime (11310502123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16020193 + ... + 16020898.

It is an arithmetic number, because the mean of its divisors is an integer number (2835636642).

Almost surely, 2^11310505123 is an apocalyptic number.

11310505123 is a deficient number, since it is larger than the sum of its proper divisors (32041445).

11310505123 is an equidigital number, since it uses as much as digits as its factorization.

11310505123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32041444.

The product of its (nonzero) digits is 450, while the sum is 22.

The spelling of 11310505123 in words is "eleven billion, three hundred ten million, five hundred five thousand, one hundred twenty-three".