21013232333031 has 24 divisors (see below), whose sum is σ = 30801943308240. Its totient is φ = 13802473973376.

The previous prime is 21013232332999. The next prime is 21013232333081. The reversal of 21013232333031 is 13033323231012.

21013232333031 is a `hidden beast` number, since 2 + 1 + 0 + 1 + 3 + 2 + 323 + 330 + 3 + 1 = 666.

It is not a de Polignac number, because 21013232333031 - 2⁵ = 21013232332999 is a prime.

It is a super-2 number, since 2×21013232333031² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21013232332986 and 21013232333004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21013232333081) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 46122696 + ... + 46576061.

It is an arithmetic number, because the mean of its divisors is an integer number (1283414304510).

Almost surely, 2^{21013232333031} is an apocalyptic number.

21013232333031 is a deficient number, since it is larger than the sum of its proper divisors (9788710975209).

21013232333031 is a wasteful number, since it uses less digits than its factorization.

21013232333031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92699135 (or 92699132 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 27.

Adding to 21013232333031 its reverse (13033323231012), we get a palindrome (34046555564043).

The spelling of 21013232333031 in words is "twenty-one trillion, thirteen billion, two hundred thirty-two million, three hundred thirty-three thousand, thirty-one".