340233431 has 2 divisors, whose sum is σ = 340233432. Its totient is φ = 340233430.

The previous prime is 340233409. The next prime is 340233433. The reversal of 340233431 is 134332043.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-340233431 is a prime.

It is a super-2 number, since 2×340233431² = 231517575140063522, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 340233433, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 340233397 and 340233406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (340233433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170116715 + 170116716.

It is an arithmetic number, because the mean of its divisors is an integer number (170116716).

Almost surely, 2^340233431 is an apocalyptic number.

340233431 is a deficient number, since it is larger than the sum of its proper divisors (1).

340233431 is an equidigital number, since it uses as much as digits as its factorization.

340233431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 23.

The square root of 340233431 is about 18445.4176152236. The cubic root of 340233431 is about 698.1128974781.

Adding to 340233431 its reverse (134332043), we get a palindrome (474565474).

The spelling of 340233431 in words is "three hundred forty million, two hundred thirty-three thousand, four hundred thirty-one".