20345213000 has 64 divisors (see below), whose sum is σ = 54408931200. Its totient is φ = 6975499200.

The previous prime is 20345212957. The next prime is 20345213047. The reversal of 20345213000 is 31254302.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1446230 + ... + 1460229.

It is an arithmetic number, because the mean of its divisors is an integer number (850139550).

Almost surely, 2^20345213000 is an apocalyptic number.

20345213000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20345213000 is an abundant number, since it is smaller than the sum of its proper divisors (34063718200).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20345213000 is a wasteful number, since it uses less digits than its factorization.

20345213000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2906487 (or 2906473 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

Adding to 20345213000 its reverse (31254302), we get a palindrome (20376467302).

The spelling of 20345213000 in words is "twenty billion, three hundred forty-five million, two hundred thirteen thousand".