343611157 has 4 divisors (see below), whose sum is σ = 363823596. Its totient is φ = 323398720.

The previous prime is 343611097. The next prime is 343611173. The reversal of 343611157 is 751116343.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 751116343 = 26863 ⋅27961.

It can be written as a sum of positive squares in 2 ways, for example, as 320195236 + 23415921 = 17894^2 + 4839^2 .

It is a cyclic number.

It is not a de Polignac number, because 343611157 - 2¹¹ = 343609109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (343611187) 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, 10106194 + ... + 10106227.

It is an arithmetic number, because the mean of its divisors is an integer number (90955899).

Almost surely, 2^343611157 is an apocalyptic number.

It is an amenable number.

343611157 is a deficient number, since it is larger than the sum of its proper divisors (20212439).

343611157 is a wasteful number, since it uses less digits than its factorization.

343611157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20212438.

The product of its digits is 7560, while the sum is 31.

The square root of 343611157 is about 18536.7515223137. The cubic root of 343611157 is about 700.4155063759.

The spelling of 343611157 in words is "three hundred forty-three million, six hundred eleven thousand, one hundred fifty-seven".