21344410031 has 8 divisors (see below), whose sum is σ = 25234770720. Its totient is φ = 17664339168.

The previous prime is 21344410013. The next prime is 21344410049. The reversal of 21344410031 is 13001444312.

It is an interprime number because it is at equal distance from previous prime (21344410013) and next prime (21344410049).

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

It is not a de Polignac number, because 21344410031 - 2⁶ = 21344409967 is a prime.

It is a super-2 number, since 2×21344410031² (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 = 21344409979 and 21344410006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21344410051) 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, 52572236 + ... + 52572641.

It is an arithmetic number, because the mean of its divisors is an integer number (3154346340).

Almost surely, 2^21344410031 is an apocalyptic number.

21344410031 is a deficient number, since it is larger than the sum of its proper divisors (3890360689).

21344410031 is a wasteful number, since it uses less digits than its factorization.

21344410031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105144913.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 21344410031 its reverse (13001444312), we get a palindrome (34345854343).

The spelling of 21344410031 in words is "twenty-one billion, three hundred forty-four million, four hundred ten thousand, thirty-one".