21334131031 has 8 divisors (see below), whose sum is σ = 21422307600. Its totient is φ = 21245995008.

The previous prime is 21334131029. The next prime is 21334131037. The reversal of 21334131031 is 13013143312.

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 21334131031 - 2¹ = 21334131029 is a prime.

It is a super-2 number, since 2×21334131031² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21334130993 and 21334131011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21334131037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1500745 + ... + 1514893.

It is an arithmetic number, because the mean of its divisors is an integer number (2677788450).

Almost surely, 2^21334131031 is an apocalyptic number.

21334131031 is a deficient number, since it is larger than the sum of its proper divisors (88176569).

21334131031 is a wasteful number, since it uses less digits than its factorization.

21334131031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20273.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 21334131031 its reverse (13013143312), we get a palindrome (34347274343).

The spelling of 21334131031 in words is "twenty-one billion, three hundred thirty-four million, one hundred thirty-one thousand, thirty-one".