131877465 has 32 divisors (see below), whose sum is σ = 215846400. Its totient is φ = 68739840.

The previous prime is 131877457. The next prime is 131877467. The reversal of 131877465 is 564778131.

It is not a de Polignac number, because 131877465 - 2³ = 131877457 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131877467) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 128655 + ... + 129675.

It is an arithmetic number, because the mean of its divisors is an integer number (6745200).

Almost surely, 2^131877465 is an apocalyptic number.

131877465 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

131877465 is a deficient number, since it is larger than the sum of its proper divisors (83968935).

131877465 is a wasteful number, since it uses less digits than its factorization.

131877465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1217.

The product of its digits is 141120, while the sum is 42.

The square root of 131877465 is about 11483.7914035392. The cubic root of 131877465 is about 509.0067365428.

The spelling of 131877465 in words is "one hundred thirty-one million, eight hundred seventy-seven thousand, four hundred sixty-five".