21332013031 has 8 divisors (see below), whose sum is σ = 24385894560. Its totient is φ = 18279744288.

The previous prime is 21332013023. The next prime is 21332013047. The reversal of 21332013031 is 13031023312.

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 21332013031 - 2³ = 21332013023 is a prime.

It is a super-2 number, since 2×21332013031² (a number of 21 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 (21332013011) 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, 374716 + ... + 427873.

It is an arithmetic number, because the mean of its divisors is an integer number (3048236820).

Almost surely, 2^21332013031 is an apocalyptic number.

21332013031 is a deficient number, since it is larger than the sum of its proper divisors (3053881529).

21332013031 is an equidigital number, since it uses as much as digits as its factorization.

21332013031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 806393.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 21332013031 its reverse (13031023312), we get a palindrome (34363036343).

The spelling of 21332013031 in words is "twenty-one billion, three hundred thirty-two million, thirteen thousand, thirty-one".