347140231 has 2 divisors, whose sum is σ = 347140232. Its totient is φ = 347140230.

The previous prime is 347140223. The next prime is 347140259. The reversal of 347140231 is 132041743.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 347140231 - 2³ = 347140223 is a prime.

It is a super-2 number, since 2×347140231² = 241012679957466722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 347140196 and 347140205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (347140271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 173570115 + 173570116.

It is an arithmetic number, because the mean of its divisors is an integer number (173570116).

Almost surely, 2^347140231 is an apocalyptic number.

347140231 is a deficient number, since it is larger than the sum of its proper divisors (1).

347140231 is an equidigital number, since it uses as much as digits as its factorization.

347140231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 347140231 is about 18631.6996272482. The cubic root of 347140231 is about 702.8052268029.

Adding to 347140231 its reverse (132041743), we get a palindrome (479181974).

The spelling of 347140231 in words is "three hundred forty-seven million, one hundred forty thousand, two hundred thirty-one".