340238431 has 4 divisors (see below), whose sum is σ = 366410632. Its totient is φ = 314066232.

The previous prime is 340238417. The next prime is 340238441. The reversal of 340238431 is 134832043.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 340238431 - 2⁵ = 340238399 is a prime.

It is a super-2 number, since 2×340238431² = 231524379858683522, which contains 22 as substring.

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 340238431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340238441) 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, 13086081 + ... + 13086106.

It is an arithmetic number, because the mean of its divisors is an integer number (91602658).

Almost surely, 2^340238431 is an apocalyptic number.

340238431 is a deficient number, since it is larger than the sum of its proper divisors (26172201).

340238431 is a wasteful number, since it uses less digits than its factorization.

340238431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26172200.

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 340238431 is about 18445.5531497432. The cubic root of 340238431 is about 698.1163172355.

The spelling of 340238431 in words is "three hundred forty million, two hundred thirty-eight thousand, four hundred thirty-one".