203013131131 has 2 divisors, whose sum is σ = 203013131132. Its totient is φ = 203013131130.

The previous prime is 203013131107. The next prime is 203013131143. The reversal of 203013131131 is 131131310302.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 203013131131 - 2⁵ = 203013131099 is a prime.

It is a super-2 number, since 2×203013131131² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 203013131099 and 203013131108.

It is not a weakly prime, because it can be changed into another prime (203013131231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101506565565 + 101506565566.

It is an arithmetic number, because the mean of its divisors is an integer number (101506565566).

Almost surely, 2^203013131131 is an apocalyptic number.

203013131131 is a deficient number, since it is larger than the sum of its proper divisors (1).

203013131131 is an equidigital number, since it uses as much as digits as its factorization.

203013131131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162, while the sum is 19.

Adding to 203013131131 its reverse (131131310302), we get a palindrome (334144441433).

The spelling of 203013131131 in words is "two hundred three billion, thirteen million, one hundred thirty-one thousand, one hundred thirty-one".