243213462031261 has 8 divisors (see below), whose sum is σ = 257522065772544. Its totient is φ = 228905072679360.

The previous prime is 243213462031219. The next prime is 243213462031271. The reversal of 243213462031261 is 162130264312342.

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 243213462031261 - 2¹³ = 243213462023069 is a prime.

It is a super-2 number, since 2×243213462031261² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243213462031271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51258795 + ... + 55802248.

It is an arithmetic number, because the mean of its divisors is an integer number (32190258221568).

Almost surely, 2^{243213462031261} is an apocalyptic number.

It is an amenable number.

243213462031261 is a deficient number, since it is larger than the sum of its proper divisors (14308603741283).

243213462031261 is a wasteful number, since it uses less digits than its factorization.

243213462031261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107194691.

The product of its (nonzero) digits is 248832, while the sum is 40.

The spelling of 243213462031261 in words is "two hundred forty-three trillion, two hundred thirteen billion, four hundred sixty-two million, thirty-one thousand, two hundred sixty-one".