4231515217 has 2 divisors, whose sum is σ = 4231515218. Its totient is φ = 4231515216.

The previous prime is 4231515209. The next prime is 4231515247. The reversal of 4231515217 is 7125151324.

4231515217 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4127291536 + 104223681 = 64244^2 + 10209^2 .

It is a cyclic number.

It is not a de Polignac number, because 4231515217 - 2³ = 4231515209 is a prime.

It is not a weakly prime, because it can be changed into another prime (4231515247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2115757608 + 2115757609.

It is an arithmetic number, because the mean of its divisors is an integer number (2115757609).

Almost surely, 2^4231515217 is an apocalyptic number.

It is an amenable number.

4231515217 is a deficient number, since it is larger than the sum of its proper divisors (1).

4231515217 is an equidigital number, since it uses as much as digits as its factorization.

4231515217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8400, while the sum is 31.

The square root of 4231515217 is about 65050.0977478128. The cubic root of 4231515217 is about 1617.4541143687.

The spelling of 4231515217 in words is "four billion, two hundred thirty-one million, five hundred fifteen thousand, two hundred seventeen".