21030230331 has 48 divisors (see below), whose sum is σ = 33664381920. Its totient is φ = 12544104960.

The previous prime is 21030230269. The next prime is 21030230357. The reversal of 21030230331 is 13303203012.

21030230331 is a `hidden beast` number, since 2 + 1 + 0 + 302 + 30 + 331 = 666.

It is not a de Polignac number, because 21030230331 - 2¹⁰ = 21030229307 is a prime.

It is a super-2 number, since 2×21030230331² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21030230371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3675685 + ... + 3681401.

It is an arithmetic number, because the mean of its divisors is an integer number (701341290).

Almost surely, 2^21030230331 is an apocalyptic number.

21030230331 is a deficient number, since it is larger than the sum of its proper divisors (12634151589).

21030230331 is a wasteful number, since it uses less digits than its factorization.

21030230331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6316 (or 6313 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

Adding to 21030230331 its reverse (13303203012), we get a palindrome (34333433343).

The spelling of 21030230331 in words is "twenty-one billion, thirty million, two hundred thirty thousand, three hundred thirty-one".