20531023005234 has 32 divisors (see below), whose sum is σ = 49688526266496. Its totient is φ = 5520947362560.

The previous prime is 20531023005193. The next prime is 20531023005257. The reversal of 20531023005234 is 43250032013502.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14377466377 + ... + 14377467804.

It is an arithmetic number, because the mean of its divisors is an integer number (1552766445828).

Almost surely, 2^{20531023005234} is an apocalyptic number.

20531023005234 is an abundant number, since it is smaller than the sum of its proper divisors (29157503261262).

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

20531023005234 is a wasteful number, since it uses less digits than its factorization.

20531023005234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28754934210.

The product of its (nonzero) digits is 21600, while the sum is 30.

Adding to 20531023005234 its reverse (43250032013502), we get a palindrome (63781055018736).

The spelling of 20531023005234 in words is "twenty trillion, five hundred thirty-one billion, twenty-three million, five thousand, two hundred thirty-four".