1011111423 has 24 divisors (see below), whose sum is σ = 1601632512. Its totient is φ = 565480944.

The previous prime is 1011111377. The next prime is 1011111427. The reversal of 1011111423 is 3241111101.

It is not a de Polignac number, because 1011111423 - 2¹⁶ = 1011045887 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011111427) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 66265 + ... + 80082.

It is an arithmetic number, because the mean of its divisors is an integer number (66734688).

Almost surely, 2^1011111423 is an apocalyptic number.

1011111423 is a deficient number, since it is larger than the sum of its proper divisors (590521089).

1011111423 is a wasteful number, since it uses less digits than its factorization.

1011111423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146411 (or 146404 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 15.

The square root of 1011111423 is about 31797.9782847904. The cubic root of 1011111423 is about 1003.6901735358.

Adding to 1011111423 its reverse (3241111101), we get a palindrome (4252222524).

The spelling of 1011111423 in words is "one billion, eleven million, one hundred eleven thousand, four hundred twenty-three".