215186241131 has 4 divisors (see below), whose sum is σ = 215187737664. Its totient is φ = 215184744600.

The previous prime is 215186241107. The next prime is 215186241133. The reversal of 215186241131 is 131142681512.

215186241131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 215186241131 - 2¹⁰ = 215186240107 is a prime.

It is a super-2 number, since 2×215186241131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 215186241091 and 215186241100.

It is not an unprimeable number, because it can be changed into a prime (215186241133) 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, 506555 + ... + 828836.

It is an arithmetic number, because the mean of its divisors is an integer number (53796934416).

Almost surely, 2^215186241131 is an apocalyptic number.

215186241131 is a deficient number, since it is larger than the sum of its proper divisors (1496533).

215186241131 is a wasteful number, since it uses less digits than its factorization.

215186241131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1496532.

The product of its digits is 11520, while the sum is 35.

The spelling of 215186241131 in words is "two hundred fifteen billion, one hundred eighty-six million, two hundred forty-one thousand, one hundred thirty-one".