203012023321313 has 4 divisors (see below), whose sum is σ = 203013916720560. Its totient is φ = 203010129922068.

The previous prime is 203012023321201. The next prime is 203012023321333. The reversal of 203012023321313 is 313123320210302.

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 203012023321313 - 2²⁸ = 203011754885857 is a prime.

It is a super-2 number, since 2×203012023321313² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203012023321333) 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, 946538783 + ... + 946753236.

It is an arithmetic number, because the mean of its divisors is an integer number (50753479180140).

Almost surely, 2^{203012023321313} is an apocalyptic number.

It is an amenable number.

203012023321313 is a deficient number, since it is larger than the sum of its proper divisors (1893399247).

203012023321313 is a wasteful number, since it uses less digits than its factorization.

203012023321313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1893399246.

The product of its (nonzero) digits is 3888, while the sum is 26.

Adding to 203012023321313 its reverse (313123320210302), we get a palindrome (516135343531615).

The spelling of 203012023321313 in words is "two hundred three trillion, twelve billion, twenty-three million, three hundred twenty-one thousand, three hundred thirteen".