343620157 has 4 divisors (see below), whose sum is σ = 343673820. Its totient is φ = 343566496.

The previous prime is 343620143. The next prime is 343620197. The reversal of 343620157 is 751026343.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 751026343 = 2467 ⋅304429.

It can be written as a sum of positive squares in 2 ways, for example, as 210656196 + 132963961 = 14514^2 + 11531^2 .

It is a cyclic number.

It is not a de Polignac number, because 343620157 - 2⁷ = 343620029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (343620127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15682 + ... + 30547.

It is an arithmetic number, because the mean of its divisors is an integer number (85918455).

Almost surely, 2^343620157 is an apocalyptic number.

It is an amenable number.

343620157 is a deficient number, since it is larger than the sum of its proper divisors (53663).

343620157 is an equidigital number, since it uses as much as digits as its factorization.

343620157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53662.

The product of its (nonzero) digits is 15120, while the sum is 31.

The square root of 343620157 is about 18536.9942817060. The cubic root of 343620157 is about 700.4216215097.

The spelling of 343620157 in words is "three hundred forty-three million, six hundred twenty thousand, one hundred fifty-seven".