203431130 has 16 divisors (see below), whose sum is σ = 418487040. Its totient is φ = 69747792.

The previous prime is 203431121. The next prime is 203431139. The reversal of 203431130 is 31134302.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (203431121) and next prime (203431139).

It is a junction number, because it is equal to n+sod(n) for n = 203431099 and 203431108.

It is not an unprimeable number, because it can be changed into a prime (203431139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1453010 + ... + 1453149.

It is an arithmetic number, because the mean of its divisors is an integer number (26155440).

Almost surely, 2^203431130 is an apocalyptic number.

203431130 is an abundant number, since it is smaller than the sum of its proper divisors (215055910).

203431130 is a wasteful number, since it uses less digits than its factorization.

203431130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2906173.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 203431130 is about 14262.9285211698. The cubic root of 203431130 is about 588.1288320448.

Adding to 203431130 its reverse (31134302), we get a palindrome (234565432).

It can be divided in two parts, 20343 and 1130, that multiplied together give a triangular number (22987590 = T₆₇₈₀).

The spelling of 203431130 in words is "two hundred three million, four hundred thirty-one thousand, one hundred thirty".