203122310003131 has 4 divisors (see below), whose sum is σ = 204604954601832. Its totient is φ = 201639665404432.

The previous prime is 203122310003117. The next prime is 203122310003143. The reversal of 203122310003131 is 131300013221302.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-203122310003131 is a prime.

It is a super-2 number, since 2×203122310003131² (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 (203122310003111) 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, 741322299145 + ... + 741322299418.

It is an arithmetic number, because the mean of its divisors is an integer number (51151238650458).

Almost surely, 2^{203122310003131} is an apocalyptic number.

203122310003131 is a deficient number, since it is larger than the sum of its proper divisors (1482644598701).

203122310003131 is a wasteful number, since it uses less digits than its factorization.

203122310003131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1482644598700.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 203122310003131 its reverse (131300013221302), we get a palindrome (334422323224433).

The spelling of 203122310003131 in words is "two hundred three trillion, one hundred twenty-two billion, three hundred ten million, three thousand, one hundred thirty-one".