203431032340 has 24 divisors (see below), whose sum is σ = 427215277440. Its totient is φ = 81370487328.

The previous prime is 203431032313. The next prime is 203431032367. The reversal of 203431032340 is 43230134302.

It is an interprime number because it is at equal distance from previous prime (203431032313) and next prime (203431032367).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1000569 + ... + 1186591.

It is an arithmetic number, because the mean of its divisors is an integer number (17800636560).

Almost surely, 2^203431032340 is an apocalyptic number.

203431032340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203431032340 is an abundant number, since it is smaller than the sum of its proper divisors (223784245100).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

203431032340 is a wasteful number, since it uses less digits than its factorization.

203431032340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240711 (or 240709 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 25.

Adding to 203431032340 its reverse (43230134302), we get a palindrome (246661166642).

The spelling of 203431032340 in words is "two hundred three billion, four hundred thirty-one million, thirty-two thousand, three hundred forty".