21134255325031 has 4 divisors (see below), whose sum is σ = 21176271737712. Its totient is φ = 21092238912352.

The previous prime is 21134255325017. The next prime is 21134255325097. The reversal of 21134255325031 is 13052355243112.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21134255325031 is a prime.

It is a super-2 number, since 2×21134255325031² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21134255325431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21008205586 + ... + 21008206591.

It is an arithmetic number, because the mean of its divisors is an integer number (5294067934428).

Almost surely, 2^{21134255325031} is an apocalyptic number.

21134255325031 is a deficient number, since it is larger than the sum of its proper divisors (42016412681).

21134255325031 is an equidigital number, since it uses as much as digits as its factorization.

21134255325031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42016412680.

The product of its (nonzero) digits is 108000, while the sum is 37.

The spelling of 21134255325031 in words is "twenty-one trillion, one hundred thirty-four billion, two hundred fifty-five million, three hundred twenty-five thousand, thirty-one".