21531134341034 has 64 divisors (see below), whose sum is σ = 33785530894080. Its totient is φ = 10282603968000.

The previous prime is 21531134340997. The next prime is 21531134341039. The reversal of 21531134341034 is 43014343113512.

It is a junction number, because it is equal to n+sod(n) for n = 21531134340985 and 21531134341003.

It is not an unprimeable number, because it can be changed into a prime (21531134341039) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1166294564 + ... + 1166313024.

It is an arithmetic number, because the mean of its divisors is an integer number (527898920220).

Almost surely, 2^{21531134341034} is an apocalyptic number.

21531134341034 is a deficient number, since it is larger than the sum of its proper divisors (12254396553046).

21531134341034 is a wasteful number, since it uses less digits than its factorization.

21531134341034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19967.

The product of its (nonzero) digits is 51840, while the sum is 35.

Adding to 21531134341034 its reverse (43014343113512), we get a palindrome (64545477454546).

The spelling of 21531134341034 in words is "twenty-one trillion, five hundred thirty-one billion, one hundred thirty-four million, three hundred forty-one thousand, thirty-four".