21014441031 has 8 divisors (see below), whose sum is σ = 28220832640. Its totient is φ = 13908838392.

The previous prime is 21014441023. The next prime is 21014441039. The reversal of 21014441031 is 13014441012.

It is an interprime number because it is at equal distance from previous prime (21014441023) and next prime (21014441039).

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

It is not a de Polignac number, because 21014441031 - 2³ = 21014441023 is a prime.

It is a super-2 number, since 2×21014441031² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21014440989 and 21014441007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21014441039) 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, 25196755 + ... + 25197588.

It is an arithmetic number, because the mean of its divisors is an integer number (3527604080).

Almost surely, 2^21014441031 is an apocalyptic number.

21014441031 is a deficient number, since it is larger than the sum of its proper divisors (7206391609).

21014441031 is a wasteful number, since it uses less digits than its factorization.

21014441031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50394485.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 21014441031 its reverse (13014441012), we get a palindrome (34028882043).

The spelling of 21014441031 in words is "twenty-one billion, fourteen million, four hundred forty-one thousand, thirty-one".