1101013123 has 4 divisors (see below), whose sum is σ = 1258300720. Its totient is φ = 943725528.

The previous prime is 1101013099. The next prime is 1101013153. The reversal of 1101013123 is 3213101011.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1101013123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1101013153) 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, 78643788 + ... + 78643801.

It is an arithmetic number, because the mean of its divisors is an integer number (314575180).

Almost surely, 2^1101013123 is an apocalyptic number.

1101013123 is a deficient number, since it is larger than the sum of its proper divisors (157287597).

1101013123 is an equidigital number, since it uses as much as digits as its factorization.

1101013123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157287596.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 1101013123 is about 33181.5177922891. The cubic root of 1101013123 is about 1032.5969354005.

Adding to 1101013123 its reverse (3213101011), we get a palindrome (4314114134).

The spelling of 1101013123 in words is "one billion, one hundred one million, thirteen thousand, one hundred twenty-three".