131840215 has 32 divisors (see below), whose sum is σ = 177613632. Its totient is φ = 93312000.

The previous prime is 131840197. The next prime is 131840227. The reversal of 131840215 is 512048131.

It is not a de Polignac number, because 131840215 - 2¹¹ = 131838167 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 131840215.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 162160 + ... + 162970.

It is an arithmetic number, because the mean of its divisors is an integer number (5550426).

Almost surely, 2^131840215 is an apocalyptic number.

131840215 is a deficient number, since it is larger than the sum of its proper divisors (45773417).

131840215 is a wasteful number, since it uses less digits than its factorization.

131840215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 931.

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 131840215 is about 11482.1694378719. The cubic root of 131840215 is about 508.9588074888.

Adding to 131840215 its reverse (512048131), we get a palindrome (643888346).

The spelling of 131840215 in words is "one hundred thirty-one million, eight hundred forty thousand, two hundred fifteen".