131378601 has 16 divisors (see below), whose sum is σ = 190491264. Its totient is φ = 80204544.

The previous prime is 131378561. The next prime is 131378603. The reversal of 131378601 is 106873131.

It is not a de Polignac number, because 131378601 - 2⁶ = 131378537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131378603) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32925 + ... + 36698.

It is an arithmetic number, because the mean of its divisors is an integer number (11905704).

Almost surely, 2^131378601 is an apocalyptic number.

It is an amenable number.

131378601 is a deficient number, since it is larger than the sum of its proper divisors (59112663).

131378601 is a wasteful number, since it uses less digits than its factorization.

131378601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69680.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 131378601 is about 11462.0504710108. The cubic root of 131378601 is about 508.3641046558.

The spelling of 131378601 in words is "one hundred thirty-one million, three hundred seventy-eight thousand, six hundred one".