21031003152430 has 64 divisors (see below), whose sum is σ = 40791552638976. Its totient is φ = 7784097552000.

The previous prime is 21031003152377. The next prime is 21031003152491. The reversal of 21031003152430 is 3425130013012.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21031003152395 and 21031003152404.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18125035 + ... + 19250425.

It is an arithmetic number, because the mean of its divisors is an integer number (637368009984).

Almost surely, 2^{21031003152430} is an apocalyptic number.

21031003152430 is a deficient number, since it is larger than the sum of its proper divisors (19760549486546).

21031003152430 is a wasteful number, since it uses less digits than its factorization.

21031003152430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1128073.

The product of its (nonzero) digits is 2160, while the sum is 25.

Adding to 21031003152430 its reverse (3425130013012), we get a palindrome (24456133165442).

The spelling of 21031003152430 in words is "twenty-one trillion, thirty-one billion, three million, one hundred fifty-two thousand, four hundred thirty".