10400323021 has 8 divisors (see below), whose sum is σ = 11711801088. Its totient is φ = 9149844000.

The previous prime is 10400323013. The next prime is 10400323093. The reversal of 10400323021 is 12032300401.

It is a happy number.

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

It is not a de Polignac number, because 10400323021 - 2³ = 10400323013 is a prime.

It is a super-3 number, since 3×10400323021³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10400322986 and 10400323004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10400323321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15249400 + ... + 15250081.

It is an arithmetic number, because the mean of its divisors is an integer number (1463975136).

Almost surely, 2^10400323021 is an apocalyptic number.

10400323021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10400323021 is a deficient number, since it is larger than the sum of its proper divisors (1311478067).

10400323021 is a wasteful number, since it uses less digits than its factorization.

10400323021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30499523.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 10400323021 its reverse (12032300401), we get a palindrome (22432623422).

The spelling of 10400323021 in words is "ten billion, four hundred million, three hundred twenty-three thousand, twenty-one".