340131423 has 4 divisors (see below), whose sum is σ = 453508568. Its totient is φ = 226754280.

The previous prime is 340131403. The next prime is 340131437. The reversal of 340131423 is 324131043.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 324131043 = 3 ⋅108043681.

It is not a de Polignac number, because 340131423 - 2⁹ = 340130911 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 340131423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340131403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56688568 + ... + 56688573.

It is an arithmetic number, because the mean of its divisors is an integer number (113377142).

Almost surely, 2^340131423 is an apocalyptic number.

340131423 is a deficient number, since it is larger than the sum of its proper divisors (113377145).

340131423 is a wasteful number, since it uses less digits than its factorization.

340131423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113377144.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 340131423 is about 18442.6522767199. The cubic root of 340131423 is about 698.0431216398.

Adding to 340131423 its reverse (324131043), we get a palindrome (664262466).

The spelling of 340131423 in words is "three hundred forty million, one hundred thirty-one thousand, four hundred twenty-three".