347140631 has 2 divisors, whose sum is σ = 347140632. Its totient is φ = 347140630.

The previous prime is 347140613. The next prime is 347140639. The reversal of 347140631 is 136041743.

Together with previous prime (347140613) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is an emirp because it is prime and its reverse (136041743) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 347140631 - 2¹⁴ = 347124247 is a prime.

It is a super-4 number, since 4×347140631⁴ (a number of 35 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 347140594 and 347140603.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (347140639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 173570315 + 173570316.

It is an arithmetic number, because the mean of its divisors is an integer number (173570316).

Almost surely, 2^347140631 is an apocalyptic number.

347140631 is a deficient number, since it is larger than the sum of its proper divisors (1).

347140631 is an equidigital number, since it uses as much as digits as its factorization.

347140631 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 347140631 is about 18631.7103616388. The cubic root of 347140631 is about 702.8054967437.

The spelling of 347140631 in words is "three hundred forty-seven million, one hundred forty thousand, six hundred thirty-one".