203030331131 has 4 divisors (see below), whose sum is σ = 203474599272. Its totient is φ = 202586062992.

The previous prime is 203030331107. The next prime is 203030331137. The reversal of 203030331131 is 131133030302.

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-203030331131 is a prime.

It is a super-2 number, since 2×203030331131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203030331137) 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, 222133385 + ... + 222134298.

It is an arithmetic number, because the mean of its divisors is an integer number (50868649818).

Almost surely, 2^203030331131 is an apocalyptic number.

203030331131 is a deficient number, since it is larger than the sum of its proper divisors (444268141).

203030331131 is an equidigital number, since it uses as much as digits as its factorization.

203030331131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444268140.

The product of its (nonzero) digits is 486, while the sum is 20.

Adding to 203030331131 its reverse (131133030302), we get a palindrome (334163361433).

The spelling of 203030331131 in words is "two hundred three billion, thirty million, three hundred thirty-one thousand, one hundred thirty-one".