21112033031 has 8 divisors (see below), whose sum is σ = 21866090400. Its totient is φ = 20359712800.

The previous prime is 21112033021. The next prime is 21112033043. The reversal of 21112033031 is 13033021112.

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 21112033031 - 2¹⁸ = 21111770887 is a prime.

It is a super-2 number, since 2×21112033031² (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 (21112033021) 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, 409520 + ... + 458181.

It is an arithmetic number, because the mean of its divisors is an integer number (2733261300).

Almost surely, 2^21112033031 is an apocalyptic number.

21112033031 is a deficient number, since it is larger than the sum of its proper divisors (754057369).

21112033031 is an equidigital number, since it uses as much as digits as its factorization.

21112033031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 868569.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 21112033031 its reverse (13033021112), we get a palindrome (34145054143).

The spelling of 21112033031 in words is "twenty-one billion, one hundred twelve million, thirty-three thousand, thirty-one".