21031300313012 has 24 divisors (see below), whose sum is σ = 40150800537120. Its totient is φ = 9559649507360.

The previous prime is 21031300313011. The next prime is 21031300313047.

21031300313012 is nontrivially palindromic in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21031300313011) 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, 16398914 + ... + 17634822.

It is an arithmetic number, because the mean of its divisors is an integer number (1672950022380).

Almost surely, 2^{21031300313012} is an apocalyptic number.

21031300313012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21031300313012 is a deficient number, since it is larger than the sum of its proper divisors (19119500224108).

21031300313012 is a wasteful number, since it uses less digits than its factorization.

21031300313012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1622671 (or 1622669 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 20.

It can be divided in two parts, 21031300 and 313012, that added together give a palindrome (21344312).

The spelling of 21031300313012 in words is "twenty-one trillion, thirty-one billion, three hundred million, three hundred thirteen thousand, twelve".