340430131 has 2 divisors, whose sum is σ = 340430132. Its totient is φ = 340430130.

The previous prime is 340430053. The next prime is 340430173. The reversal of 340430131 is 131034043.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 340430131 - 2¹⁵ = 340397363 is a prime.

It is a super-2 number, since 2×340430131² = 231785348185354322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 340430099 and 340430108.

It is not a weakly prime, because it can be changed into another prime (340434131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170215065 + 170215066.

It is an arithmetic number, because the mean of its divisors is an integer number (170215066).

Almost surely, 2^340430131 is an apocalyptic number.

340430131 is a deficient number, since it is larger than the sum of its proper divisors (1).

340430131 is an equidigital number, since it uses as much as digits as its factorization.

340430131 is an odious number, because the sum of its binary digits is odd.

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

The square root of 340430131 is about 18450.7487923932. The cubic root of 340430131 is about 698.2474054758.

Adding to 340430131 its reverse (131034043), we get a palindrome (471464174).

The spelling of 340430131 in words is "three hundred forty million, four hundred thirty thousand, one hundred thirty-one".