400315210171 has 2 divisors, whose sum is σ = 400315210172. Its totient is φ = 400315210170.

The previous prime is 400315210147. The next prime is 400315210241. The reversal of 400315210171 is 171012513004.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-400315210171 is a prime.

It is not a weakly prime, because it can be changed into another prime (400315213171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200157605085 + 200157605086.

It is an arithmetic number, because the mean of its divisors is an integer number (200157605086).

Almost surely, 2^400315210171 is an apocalyptic number.

400315210171 is a deficient number, since it is larger than the sum of its proper divisors (1).

400315210171 is an equidigital number, since it uses as much as digits as its factorization.

400315210171 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 840, while the sum is 25.

Adding to 400315210171 its reverse (171012513004), we get a palindrome (571327723175).

The spelling of 400315210171 in words is "four hundred billion, three hundred fifteen million, two hundred ten thousand, one hundred seventy-one".