10531404821 has 12 divisors (see below), whose sum is σ = 12511476288. Its totient is φ = 8834854392.

The previous prime is 10531404811. The next prime is 10531404859. The reversal of 10531404821 is 12840413501.

It is a de Polignac number, because none of the positive numbers 2^k-10531404821 is a prime.

It is a super-2 number, since 2×10531404821² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10531404811) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2284151 + ... + 2288756.

It is an arithmetic number, because the mean of its divisors is an integer number (1042623024).

Almost surely, 2^10531404821 is an apocalyptic number.

It is an amenable number.

10531404821 is a deficient number, since it is larger than the sum of its proper divisors (1980071467).

10531404821 is an equidigital number, since it uses as much as digits as its factorization.

10531404821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4572968 (or 4572961 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 29.

The spelling of 10531404821 in words is "ten billion, five hundred thirty-one million, four hundred four thousand, eight hundred twenty-one".