131523878 has 8 divisors (see below), whose sum is σ = 197340840. Its totient is φ = 65743600.

The previous prime is 131523877. The next prime is 131523901. The reversal of 131523878 is 878325131.

It is a happy number.

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

It is a super-3 number, since 3×131523878³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131523877) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3053 + ... + 16503.

It is an arithmetic number, because the mean of its divisors is an integer number (24667605).

Almost surely, 2^131523878 is an apocalyptic number.

131523878 is a deficient number, since it is larger than the sum of its proper divisors (65816962).

131523878 is a wasteful number, since it uses less digits than its factorization.

131523878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18342.

The product of its digits is 40320, while the sum is 38.

The square root of 131523878 is about 11468.3860241971. The cubic root of 131523878 is about 508.5514167600.

The spelling of 131523878 in words is "one hundred thirty-one million, five hundred twenty-three thousand, eight hundred seventy-eight".