131377442 has 32 divisors (see below), whose sum is σ = 233570304. Its totient is φ = 54234000.

The previous prime is 131377429. The next prime is 131377501. The reversal of 131377442 is 244773131.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 131377399 and 131377408.

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 15 ways as a sum of consecutive naturals, for example, 113567 + ... + 114717.

It is an arithmetic number, because the mean of its divisors is an integer number (7299072).

Almost surely, 2^131377442 is an apocalyptic number.

131377442 is a deficient number, since it is larger than the sum of its proper divisors (102192862).

131377442 is a wasteful number, since it uses less digits than its factorization.

131377442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1454.

The product of its digits is 14112, while the sum is 32.

The square root of 131377442 is about 11461.9999127552. Note that the first 4 decimals coincide. The cubic root of 131377442 is about 508.3626097504.

The spelling of 131377442 in words is "one hundred thirty-one million, three hundred seventy-seven thousand, four hundred forty-two".