21312033102031 has 8 divisors (see below), whose sum is σ = 24650062383744. Its totient is φ = 18047367101400.

The previous prime is 21312033102001. The next prime is 21312033102037. The reversal of 21312033102031 is 13020133021312.

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

It is not a de Polignac number, because 21312033102031 - 2¹⁹ = 21312032577743 is a prime.

It is a super-2 number, since 2×21312033102031² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21312033101993 and 21312033102011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21312033102037) 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, 18340819645 + ... + 18340820806.

It is an arithmetic number, because the mean of its divisors is an integer number (3081257797968).

Almost surely, 2^{21312033102031} is an apocalyptic number.

21312033102031 is a deficient number, since it is larger than the sum of its proper divisors (3338029281713).

21312033102031 is an equidigital number, since it uses as much as digits as its factorization.

21312033102031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36681640541.

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

Adding to 21312033102031 its reverse (13020133021312), we get a palindrome (34332166123343).

The spelling of 21312033102031 in words is "twenty-one trillion, three hundred twelve billion, thirty-three million, one hundred two thousand, thirty-one".