131387938 has 16 divisors (see below), whose sum is σ = 218209824. Its totient is φ = 58829760.

The previous prime is 131387923. The next prime is 131387947. The reversal of 131387938 is 839783131.

It is a junction number, because it is equal to n+sod(n) for n = 131387894 and 131387903.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43095 + ... + 46042.

It is an arithmetic number, because the mean of its divisors is an integer number (13638114).

Almost surely, 2^131387938 is an apocalyptic number.

131387938 is a deficient number, since it is larger than the sum of its proper divisors (86821886).

131387938 is a wasteful number, since it uses less digits than its factorization.

131387938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89217.

The product of its digits is 108864, while the sum is 43.

The square root of 131387938 is about 11462.4577643715. The cubic root of 131387938 is about 508.3761474166.

The spelling of 131387938 in words is "one hundred thirty-one million, three hundred eighty-seven thousand, nine hundred thirty-eight".