21031431000302 has 32 divisors (see below), whose sum is σ = 32596233046848. Its totient is φ = 10173096000000.

The previous prime is 21031431000259. The next prime is 21031431000329. The reversal of 21031431000302 is 20300013413012.

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, 3791099 + ... + 7512342.

It is an arithmetic number, because the mean of its divisors is an integer number (1018632282714).

Almost surely, 2^{21031431000302} is an apocalyptic number.

21031431000302 is a deficient number, since it is larger than the sum of its proper divisors (11564802046546).

21031431000302 is a wasteful number, since it uses less digits than its factorization.

21031431000302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11303756.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 21031431000302 its reverse (20300013413012), we get a palindrome (41331444413314).

The spelling of 21031431000302 in words is "twenty-one trillion, thirty-one billion, four hundred thirty-one million, three hundred two", and thus it is an aban number.