340157 has 4 divisors (see below), whose sum is σ = 358080. Its totient is φ = 322236.

The previous prime is 340129. The next prime is 340169. The reversal of 340157 is 751043.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 751043 = 17 ⋅44179.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-340157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 340157.

It is not an unprimeable number, because it can be changed into a prime (340117) 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, 8933 + ... + 8970.

It is an arithmetic number, because the mean of its divisors is an integer number (89520).

2³⁴⁰¹⁵⁷ is an apocalyptic number.

It is an amenable number.

340157 is a deficient number, since it is larger than the sum of its proper divisors (17923).

340157 is a wasteful number, since it uses less digits than its factorization.

340157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17922.

The product of its (nonzero) digits is 420, while the sum is 20.

The square root of 340157 is about 583.2298003360. The cubic root of 340157 is about 69.8060618211.

The spelling of 340157 in words is "three hundred forty thousand, one hundred fifty-seven".