340212423 has 16 divisors (see below), whose sum is σ = 478068480. Its totient is φ = 214611264.

The previous prime is 340212413. The next prime is 340212469. The reversal of 340212423 is 324212043.

It is not a de Polignac number, because 340212423 - 2⁴ = 340212407 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 340212423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340212413) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51190 + ... + 57452.

It is an arithmetic number, because the mean of its divisors is an integer number (29879280).

Almost surely, 2^340212423 is an apocalyptic number.

340212423 is a deficient number, since it is larger than the sum of its proper divisors (137856057).

340212423 is a wasteful number, since it uses less digits than its factorization.

340212423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7238.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 340212423 is about 18444.8481425031. The cubic root of 340212423 is about 698.0985286593.

Adding to 340212423 its reverse (324212043), we get a palindrome (664424466).

The spelling of 340212423 in words is "three hundred forty million, two hundred twelve thousand, four hundred twenty-three".