340756423 has 4 divisors (see below), whose sum is σ = 389435920. Its totient is φ = 292076928.

The previous prime is 340756399. The next prime is 340756457. The reversal of 340756423 is 324657043.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 324657043 = 163 ⋅1991761.

It is a cyclic number.

It is not a de Polignac number, because 340756423 - 2⁵ = 340756391 is a prime.

It is a super-2 number, since 2×340756423² = 232229879631509858, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340756223) 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, 24339738 + ... + 24339751.

It is an arithmetic number, because the mean of its divisors is an integer number (97358980).

Almost surely, 2^340756423 is an apocalyptic number.

340756423 is a deficient number, since it is larger than the sum of its proper divisors (48679497).

340756423 is an equidigital number, since it uses as much as digits as its factorization.

340756423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48679496.

The product of its (nonzero) digits is 60480, while the sum is 34.

The square root of 340756423 is about 18459.5889174163. The cubic root of 340756423 is about 698.4704172582.

The spelling of 340756423 in words is "three hundred forty million, seven hundred fifty-six thousand, four hundred twenty-three".