131868869 has 8 divisors (see below), whose sum is σ = 143990112. Its totient is φ = 119769840.

The previous prime is 131868827. The next prime is 131868901. The reversal of 131868869 is 968868131.

It is a happy number.

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 131868869 - 2¹⁶ = 131803333 is a prime.

It is a super-2 number, since 2×131868869² = 34778797222678322, which 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 (131868809) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8402 + ... + 18284.

It is an arithmetic number, because the mean of its divisors is an integer number (17998764).

Almost surely, 2^131868869 is an apocalyptic number.

It is an amenable number.

131868869 is a deficient number, since it is larger than the sum of its proper divisors (12121243).

131868869 is a wasteful number, since it uses less digits than its factorization.

131868869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11107.

The product of its digits is 497664, while the sum is 50.

The square root of 131868869 is about 11483.4171308021. The cubic root of 131868869 is about 508.9956769909.

The spelling of 131868869 in words is "one hundred thirty-one million, eight hundred sixty-eight thousand, eight hundred sixty-nine".