1020111423 has 16 divisors (see below), whose sum is σ = 1398378720. Its totient is φ = 660998016.

The previous prime is 1020111419. The next prime is 1020111487. The reversal of 1020111423 is 3241110201.

It is not a de Polignac number, because 1020111423 - 2² = 1020111419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020111623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 114361 + ... + 122957.

It is an arithmetic number, because the mean of its divisors is an integer number (87398670).

Almost surely, 2^1020111423 is an apocalyptic number.

1020111423 is a deficient number, since it is larger than the sum of its proper divisors (378267297).

1020111423 is a wasteful number, since it uses less digits than its factorization.

1020111423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9706.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 1020111423 is about 31939.1831924362. The cubic root of 1020111423 is about 1006.6593621217.

Adding to 1020111423 its reverse (3241110201), we get a palindrome (4261221624).

The spelling of 1020111423 in words is "one billion, twenty million, one hundred eleven thousand, four hundred twenty-three".