1021011423 has 16 divisors (see below), whose sum is σ = 1423478016. Its totient is φ = 649732160.

The previous prime is 1021011419. The next prime is 1021011463. The reversal of 1021011423 is 3241101201.

It is a cyclic number.

It is not a de Polignac number, because 1021011423 - 2² = 1021011419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021011413) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18811 + ... + 48947.

It is an arithmetic number, because the mean of its divisors is an integer number (88967376).

Almost surely, 2^1021011423 is an apocalyptic number.

1021011423 is a deficient number, since it is larger than the sum of its proper divisors (402466593).

1021011423 is a wasteful number, since it uses less digits than its factorization.

1021011423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30654.

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

The square root of 1021011423 is about 31953.2693632436. The cubic root of 1021011423 is about 1006.9553190457.

Adding to 1021011423 its reverse (3241101201), we get a palindrome (4262112624).

The spelling of 1021011423 in words is "one billion, twenty-one million, eleven thousand, four hundred twenty-three".