315164021101 has 4 divisors (see below), whose sum is σ = 315957885532. Its totient is φ = 314370156672.

The previous prime is 315164021099. The next prime is 315164021141. The reversal of 315164021101 is 101120461513.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 82656825001 + 232507196100 = 287501^2 + 482190^2 .

It is a cyclic number.

It is not a de Polignac number, because 315164021101 - 2¹ = 315164021099 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315164021141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 396931620 + ... + 396932413.

It is an arithmetic number, because the mean of its divisors is an integer number (78989471383).

Almost surely, 2^315164021101 is an apocalyptic number.

It is an amenable number.

315164021101 is a deficient number, since it is larger than the sum of its proper divisors (793864431).

315164021101 is an equidigital number, since it uses as much as digits as its factorization.

315164021101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 793864430.

The product of its (nonzero) digits is 720, while the sum is 25.

Adding to 315164021101 its reverse (101120461513), we get a palindrome (416284482614).

The spelling of 315164021101 in words is "three hundred fifteen billion, one hundred sixty-four million, twenty-one thousand, one hundred one".