20010403213 has 4 divisors (see below), whose sum is σ = 20880420768. Its totient is φ = 19140385660.

The previous prime is 20010403201. The next prime is 20010403253. The reversal of 20010403213 is 31230401002.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20010403213 - 2⁹ = 20010402701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20010403253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 435008743 + ... + 435008788.

It is an arithmetic number, because the mean of its divisors is an integer number (5220105192).

Almost surely, 2^20010403213 is an apocalyptic number.

20010403213 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

20010403213 is a deficient number, since it is larger than the sum of its proper divisors (870017555).

20010403213 is an equidigital number, since it uses as much as digits as its factorization.

20010403213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 870017554.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 20010403213 its reverse (31230401002), we get a palindrome (51240804215).

The spelling of 20010403213 in words is "twenty billion, ten million, four hundred three thousand, two hundred thirteen".