21134005331 has 8 divisors (see below), whose sum is σ = 22063583520. Its totient is φ = 20205319552.

The previous prime is 21134005307. The next prime is 21134005391. The reversal of 21134005331 is 13350043112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21134005331 - 2¹⁴ = 21133988947 is a prime.

It is a super-2 number, since 2×21134005331² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a junction number, because it is equal to n+sod(n) for n = 21134005297 and 21134005306.

It is not an unprimeable number, because it can be changed into a prime (21134005391) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 174470 + ... + 269643.

It is an arithmetic number, because the mean of its divisors is an integer number (2757947940).

Almost surely, 2^21134005331 is an apocalyptic number.

21134005331 is a deficient number, since it is larger than the sum of its proper divisors (929578189).

21134005331 is a wasteful number, since it uses less digits than its factorization.

21134005331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446205.

The product of its (nonzero) digits is 1080, while the sum is 23.

Adding to 21134005331 its reverse (13350043112), we get a palindrome (34484048443).

The spelling of 21134005331 in words is "twenty-one billion, one hundred thirty-four million, five thousand, three hundred thirty-one".