343601131 has 4 divisors (see below), whose sum is σ = 343640232. Its totient is φ = 343562032.

The previous prime is 343601123. The next prime is 343601147. The reversal of 343601131 is 131106343.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 131106343 = 2539 ⋅51637.

It is a cyclic number.

It is not a de Polignac number, because 343601131 - 2³ = 343601123 is a prime.

It is a super-2 number, since 2×343601131² = 236123474448958322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (343601101) 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, 456 + ... + 26218.

It is an arithmetic number, because the mean of its divisors is an integer number (85910058).

Almost surely, 2^343601131 is an apocalyptic number.

343601131 is the 11724-th centered pentagonal number.

343601131 is a deficient number, since it is larger than the sum of its proper divisors (39101).

343601131 is a wasteful number, since it uses less digits than its factorization.

343601131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39100.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 343601131 is about 18536.4810846072. The cubic root of 343601131 is about 700.4086939912.

Adding to 343601131 its reverse (131106343), we get a palindrome (474707474).

The spelling of 343601131 in words is "three hundred forty-three million, six hundred one thousand, one hundred thirty-one".