340123957 has 4 divisors (see below), whose sum is σ = 344221920. Its totient is φ = 336025996.

The previous prime is 340123891. The next prime is 340123969. The reversal of 340123957 is 759321043.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 340123957 - 2⁷ = 340123829 is a prime.

It is a super-2 number, since 2×340123957² = 231368612250675698, 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 (340123757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2048857 + ... + 2049022.

It is an arithmetic number, because the mean of its divisors is an integer number (86055480).

Almost surely, 2^340123957 is an apocalyptic number.

It is an amenable number.

340123957 is a deficient number, since it is larger than the sum of its proper divisors (4097963).

340123957 is an equidigital number, since it uses as much as digits as its factorization.

340123957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4097962.

The product of its (nonzero) digits is 22680, while the sum is 34.

The square root of 340123957 is about 18442.4498643754. The cubic root of 340123957 is about 698.0380141747.

The spelling of 340123957 in words is "three hundred forty million, one hundred twenty-three thousand, nine hundred fifty-seven".