340422431 has 4 divisors (see below), whose sum is σ = 340483752. Its totient is φ = 340361112.

The previous prime is 340422427. The next prime is 340422437. The reversal of 340422431 is 134224043.

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 340422431 - 2² = 340422427 is a prime.

It is a super-2 number, since 2×340422431² = 231774863055899522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 340422397 and 340422406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340422437) 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, 21401 + ... + 33746.

It is an arithmetic number, because the mean of its divisors is an integer number (85120938).

Almost surely, 2^340422431 is an apocalyptic number.

340422431 is a deficient number, since it is larger than the sum of its proper divisors (61321).

340422431 is an equidigital number, since it uses as much as digits as its factorization.

340422431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61320.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 340422431 is about 18450.5401275952. The cubic root of 340422431 is about 698.2421410127.

Adding to 340422431 its reverse (134224043), we get a palindrome (474646474).

The spelling of 340422431 in words is "three hundred forty million, four hundred twenty-two thousand, four hundred thirty-one".