21031431000304 has 10 divisors (see below), whose sum is σ = 40748397563120. Its totient is φ = 10515715500144.

The previous prime is 21031431000259. The next prime is 21031431000329. The reversal of 21031431000304 is 40300013413012.

It is a super-2 number, since 2×21031431000304² (a number of 27 digits) contains 22 as substring.

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 as a sum of consecutive naturals, namely, 657232218744 + ... + 657232218775.

It is an arithmetic number, because the mean of its divisors is an integer number (4074839756312).

Almost surely, 2^{21031431000304} is an apocalyptic number.

It is an amenable number.

21031431000304 is a deficient number, since it is larger than the sum of its proper divisors (19716966562816).

21031431000304 is a wasteful number, since it uses less digits than its factorization.

21031431000304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1314464437527 (or 1314464437521 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 21031431000304 its reverse (40300013413012), we get a palindrome (61331444413316).

The spelling of 21031431000304 in words is "twenty-one trillion, thirty-one billion, four hundred thirty-one million, three hundred four", and thus it is an aban number.