1011113123 has 2 divisors, whose sum is σ = 1011113124. Its totient is φ = 1011113122.

The previous prime is 1011113119. The next prime is 1011113153. The reversal of 1011113123 is 3213111101.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (3213111101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1011113123 - 2² = 1011113119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1011113098 and 1011113107.

It is not a weakly prime, because it can be changed into another prime (1011113153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505556561 + 505556562.

It is an arithmetic number, because the mean of its divisors is an integer number (505556562).

Almost surely, 2^1011113123 is an apocalyptic number.

1011113123 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011113123 is an equidigital number, since it uses as much as digits as its factorization.

1011113123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18, while the sum is 14.

The square root of 1011113123 is about 31798.0050160383. The cubic root of 1011113123 is about 1003.6907360430.

Adding to 1011113123 its reverse (3213111101), we get a palindrome (4224224224).

The spelling of 1011113123 in words is "one billion, eleven million, one hundred thirteen thousand, one hundred twenty-three".