130203031 has 4 divisors (see below), whose sum is σ = 148803472. Its totient is φ = 111602592.

The previous prime is 130202971. The next prime is 130203041. The reversal of 130203031 is 130302031.

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

It is a cyclic number.

It is not a de Polignac number, because 130203031 - 2⁷ = 130202903 is a prime.

It is a super-2 number, since 2×130203031² = 33905658563173922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130203041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9300210 + ... + 9300223.

It is an arithmetic number, because the mean of its divisors is an integer number (37200868).

Almost surely, 2^130203031 is an apocalyptic number.

130203031 is a deficient number, since it is larger than the sum of its proper divisors (18600441).

130203031 is an equidigital number, since it uses as much as digits as its factorization.

130203031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18600440.

The product of its (nonzero) digits is 54, while the sum is 13.

The square root of 130203031 is about 11410.6542757197. The cubic root of 130203031 is about 506.8432862338.

Adding to 130203031 its reverse (130302031), we get a palindrome (260505062).

The spelling of 130203031 in words is "one hundred thirty million, two hundred three thousand, thirty-one".