340515431 has 2 divisors, whose sum is σ = 340515432. Its totient is φ = 340515430.

The previous prime is 340515367. The next prime is 340515463. The reversal of 340515431 is 134515043.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 340515431 - 2⁶ = 340515367 is a prime.

It is a super-2 number, since 2×340515431² = 231901517498231522, which contains 22 as substring.

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 340515431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (340515731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170257715 + 170257716.

It is an arithmetic number, because the mean of its divisors is an integer number (170257716).

Almost surely, 2^340515431 is an apocalyptic number.

340515431 is a deficient number, since it is larger than the sum of its proper divisors (1).

340515431 is an equidigital number, since it uses as much as digits as its factorization.

340515431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 340515431 is about 18453.0602069142. The cubic root of 340515431 is about 698.3057194775.

The spelling of 340515431 in words is "three hundred forty million, five hundred fifteen thousand, four hundred thirty-one".