212574313231505 has 8 divisors (see below), whose sum is σ = 256037462778600. Its totient is φ = 169427259318016.

The previous prime is 212574313231447. The next prime is 212574313231517. The reversal of 212574313231505 is 505132313475212.

It can be written as a sum of positive squares in 4 ways, for example, as 7902491232769 + 204671821998736 = 2811137^2 + 14306356^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 212574313231505 - 2¹⁰ = 212574313230481 is a prime.

It is a super-3 number, since 3×212574313231505³ (a number of 44 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79023906920 + ... + 79023909609.

It is an arithmetic number, because the mean of its divisors is an integer number (32004682847325).

Almost surely, 2^{212574313231505} is an apocalyptic number.

It is an amenable number.

212574313231505 is a deficient number, since it is larger than the sum of its proper divisors (43463149547095).

212574313231505 is a wasteful number, since it uses less digits than its factorization.

212574313231505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158047816803.

The product of its (nonzero) digits is 756000, while the sum is 44.

The spelling of 212574313231505 in words is "two hundred twelve trillion, five hundred seventy-four billion, three hundred thirteen million, two hundred thirty-one thousand, five hundred five".