207400931 has 2 divisors, whose sum is σ = 207400932. Its totient is φ = 207400930.

The previous prime is 207400909. The next prime is 207400933. The reversal of 207400931 is 139004702.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-207400931 is a prime.

It is a super-2 number, since 2×207400931² = 86030292359333522, which contains 22 as substring.

Together with 207400933, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 207400931.

It is not a weakly prime, because it can be changed into another prime (207400933) 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 as a sum of consecutive naturals, namely, 103700465 + 103700466.

It is an arithmetic number, because the mean of its divisors is an integer number (103700466).

Almost surely, 2^207400931 is an apocalyptic number.

207400931 is a deficient number, since it is larger than the sum of its proper divisors (1).

207400931 is an equidigital number, since it uses as much as digits as its factorization.

207400931 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 207400931 is about 14401.4211451509. The cubic root of 207400931 is about 591.9298399247.

The spelling of 207400931 in words is "two hundred seven million, four hundred thousand, nine hundred thirty-one".