340131403 has 2 divisors, whose sum is σ = 340131404. Its totient is φ = 340131402.

The previous prime is 340131377. The next prime is 340131437. The reversal of 340131403 is 304131043.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 340131403 - 2⁵ = 340131371 is a prime.

It is equal to p_18301411 and since 340131403 and 18301411 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (340131443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170065701 + 170065702.

It is an arithmetic number, because the mean of its divisors is an integer number (170065702).

Almost surely, 2^340131403 is an apocalyptic number.

340131403 is a deficient number, since it is larger than the sum of its proper divisors (1).

340131403 is an equidigital number, since it uses as much as digits as its factorization.

340131403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 340131403 is about 18442.6517344985. The cubic root of 340131403 is about 698.0431079580.

Adding to 340131403 its reverse (304131043), we get a palindrome (644262446).

The spelling of 340131403 in words is "three hundred forty million, one hundred thirty-one thousand, four hundred three".