21031001014 has 4 divisors (see below), whose sum is σ = 31546501524. Its totient is φ = 10515500506.

The previous prime is 21031000973. The next prime is 21031001039. The reversal of 21031001014 is 41010013012.

21031001014 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 21031000985 and 21031001003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5257750252 + ... + 5257750255.

It is an arithmetic number, because the mean of its divisors is an integer number (7886625381).

Almost surely, 2^21031001014 is an apocalyptic number.

21031001014 is a deficient number, since it is larger than the sum of its proper divisors (10515500510).

21031001014 is a wasteful number, since it uses less digits than its factorization.

21031001014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10515500509.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 21031001014 its reverse (41010013012), we get a palindrome (62041014026).

The spelling of 21031001014 in words is "twenty-one billion, thirty-one million, one thousand, fourteen".