10440340531 has 4 divisors (see below), whose sum is σ = 10683139192. Its totient is φ = 10197541872.

The previous prime is 10440340529. The next prime is 10440340541. The reversal of 10440340531 is 13504304401.

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

It is a cyclic number.

It is not a de Polignac number, because 10440340531 - 2¹ = 10440340529 is a prime.

It is a super-2 number, since 2×10440340531² (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 = 10440340496 and 10440340505.

It is not an unprimeable number, because it can be changed into a prime (10440340541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121399266 + ... + 121399351.

It is an arithmetic number, because the mean of its divisors is an integer number (2670784798).

Almost surely, 2^10440340531 is an apocalyptic number.

10440340531 is a deficient number, since it is larger than the sum of its proper divisors (242798661).

10440340531 is an equidigital number, since it uses as much as digits as its factorization.

10440340531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242798660.

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 10440340531 its reverse (13504304401), we get a palindrome (23944644932).

The spelling of 10440340531 in words is "ten billion, four hundred forty million, three hundred forty thousand, five hundred thirty-one".