21403143025230 has 32 divisors (see below), whose sum is σ = 51400619704224. Its totient is φ = 5703829646336.

The previous prime is 21403143025181. The next prime is 21403143025273. The reversal of 21403143025230 is 3252034130412.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

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, 229650159 + ... + 229743338.

It is an arithmetic number, because the mean of its divisors is an integer number (1606269365757).

Almost surely, 2^{21403143025230} is an apocalyptic number.

21403143025230 is an abundant number, since it is smaller than the sum of its proper divisors (29997476678994).

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

21403143025230 is a wasteful number, since it uses less digits than its factorization.

21403143025230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459395060.

The product of its (nonzero) digits is 17280, while the sum is 30.

Adding to 21403143025230 its reverse (3252034130412), we get a palindrome (24655177155642).

The spelling of 21403143025230 in words is "twenty-one trillion, four hundred three billion, one hundred forty-three million, twenty-five thousand, two hundred thirty".