10203121012313 has 4 divisors (see below), whose sum is σ = 10208019296208. Its totient is φ = 10198222728420.

The previous prime is 10203121012243. The next prime is 10203121012319. The reversal of 10203121012313 is 31321012130201.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10203121012313 - 2⁸ = 10203121012057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10203121012319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2449138823 + ... + 2449142988.

It is an arithmetic number, because the mean of its divisors is an integer number (2552004824052).

Almost surely, 2^{10203121012313} is an apocalyptic number.

It is an amenable number.

10203121012313 is a deficient number, since it is larger than the sum of its proper divisors (4898283895).

10203121012313 is an equidigital number, since it uses as much as digits as its factorization.

10203121012313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4898283894.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 10203121012313 its reverse (31321012130201), we get a palindrome (41524133142514).

The spelling of 10203121012313 in words is "ten trillion, two hundred three billion, one hundred twenty-one million, twelve thousand, three hundred thirteen".