343561631 has 8 divisors (see below), whose sum is σ = 393336480. Its totient is φ = 293960448.

The previous prime is 343561607. The next prime is 343561639. The reversal of 343561631 is 136165343.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 343561631 - 2²⁶ = 276452767 is a prime.

It is a super-2 number, since 2×343561631² = 236069188590760322, 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 (343561639) 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 7 ways as a sum of consecutive naturals, for example, 39146 + ... + 47111.

It is an arithmetic number, because the mean of its divisors is an integer number (49167060).

Almost surely, 2^343561631 is an apocalyptic number.

343561631 is a deficient number, since it is larger than the sum of its proper divisors (49774849).

343561631 is an equidigital number, since it uses as much as digits as its factorization.

343561631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86833.

The product of its digits is 19440, while the sum is 32.

The square root of 343561631 is about 18535.4155874639. The cubic root of 343561631 is about 700.3818535638.

The spelling of 343561631 in words is "three hundred forty-three million, five hundred sixty-one thousand, six hundred thirty-one".