2101203423 has 40 divisors (see below), whose sum is σ = 3429362640. Its totient is φ = 1271531520.

The previous prime is 2101203421. The next prime is 2101203437. The reversal of 2101203423 is 3243021012.

It is not a de Polignac number, because 2101203423 - 2¹ = 2101203421 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2101203396 and 2101203405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101203421) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 780063 + ... + 782751.

It is an arithmetic number, because the mean of its divisors is an integer number (85734066).

Almost surely, 2^2101203423 is an apocalyptic number.

2101203423 is a deficient number, since it is larger than the sum of its proper divisors (1328159217).

2101203423 is a wasteful number, since it uses less digits than its factorization.

2101203423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3589 (or 3580 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 2101203423 is about 45838.8854903781. The cubic root of 2101203423 is about 1280.8237338983.

Adding to 2101203423 its reverse (3243021012), we get a palindrome (5344224435).

The spelling of 2101203423 in words is "two billion, one hundred one million, two hundred three thousand, four hundred twenty-three".