21024030031230 has 64 divisors (see below), whose sum is σ = 51562255987008. Its totient is φ = 5484304250880.

The previous prime is 21024030031223. The next prime is 21024030031273. The reversal of 21024030031230 is 3213003042012.

It is a junction number, because it is equal to n+sod(n) for n = 21024030031197 and 21024030031206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19082361 + ... + 20154020.

It is an arithmetic number, because the mean of its divisors is an integer number (805660249797).

Almost surely, 2^{21024030031230} is an apocalyptic number.

21024030031230 is an abundant number, since it is smaller than the sum of its proper divisors (30538225955778).

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

21024030031230 is a wasteful number, since it uses less digits than its factorization.

21024030031230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39236781.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 21024030031230 its reverse (3213003042012), we get a palindrome (24237033073242).

The spelling of 21024030031230 in words is "twenty-one trillion, twenty-four billion, thirty million, thirty-one thousand, two hundred thirty".