100312402321 has 4 divisors (see below), whose sum is σ = 101232699700. Its totient is φ = 99392104944.

The previous prime is 100312402313. The next prime is 100312402349. The reversal of 100312402321 is 123204213001.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 123204213001 = 107 ⋅1151441243.

It can be written as a sum of positive squares in 2 ways, for example, as 35344000000 + 64968402321 = 188000^2 + 254889^2 .

It is a cyclic number.

It is not a de Polignac number, because 100312402321 - 2³ = 100312402313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100312408321) 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 3 ways as a sum of consecutive naturals, for example, 460148526 + ... + 460148743.

It is an arithmetic number, because the mean of its divisors is an integer number (25308174925).

Almost surely, 2^100312402321 is an apocalyptic number.

It is an amenable number.

100312402321 is a deficient number, since it is larger than the sum of its proper divisors (920297379).

100312402321 is an equidigital number, since it uses as much as digits as its factorization.

100312402321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 920297378.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 100312402321 its reverse (123204213001), we get a palindrome (223516615322).

The spelling of 100312402321 in words is "one hundred billion, three hundred twelve million, four hundred two thousand, three hundred twenty-one".