207431040 has 64 divisors (see below), whose sum is σ = 661192560. Its totient is φ = 55314432.

The previous prime is 207431039. The next prime is 207431041. The reversal of 207431040 is 40134702.

207431040 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (207431039) and next prime (207431041).

It is a tau number, because it is divible by the number of its divisors (64).

It is a junction number, because it is equal to n+sod(n) for n = 207430998 and 207431016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (207431041) 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, 52099 + ... + 55938.

Almost surely, 2^207431040 is an apocalyptic number.

207431040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

207431040 is an abundant number, since it is smaller than the sum of its proper divisors (453761520).

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

207431040 is a wasteful number, since it uses less digits than its factorization.

207431040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108059 (or 108047 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 207431040 is about 14402.4664554374. The cubic root of 207431040 is about 591.9584826010.

Adding to 207431040 its reverse (40134702), we get a palindrome (247565742).

The spelling of 207431040 in words is "two hundred seven million, four hundred thirty-one thousand, forty".