634121347 has 2 divisors, whose sum is σ = 634121348. Its totient is φ = 634121346.

The previous prime is 634121303. The next prime is 634121363. The reversal of 634121347 is 743121436.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 634121347 - 2¹⁵ = 634088579 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (634122347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317060673 + 317060674.

It is an arithmetic number, because the mean of its divisors is an integer number (317060674).

Almost surely, 2^634121347 is an apocalyptic number.

634121347 is a deficient number, since it is larger than the sum of its proper divisors (1).

634121347 is an equidigital number, since it uses as much as digits as its factorization.

634121347 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096, while the sum is 31.

The square root of 634121347 is about 25181.7661612525. The cubic root of 634121347 is about 859.1271778318.

The spelling of 634121347 in words is "six hundred thirty-four million, one hundred twenty-one thousand, three hundred forty-seven".