131446464 has 28 divisors (see below), whose sum is σ = 347785944. Its totient is φ = 43815424.

The previous prime is 131446463. The next prime is 131446487. The reversal of 131446464 is 464644131.

It is a nude number because it is divisible by every one of its digits.

It is a nialpdrome in base 8.

It is not an unprimeable number, because it can be changed into a prime (131446463) 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, 342117 + ... + 342500.

Almost surely, 2^131446464 is an apocalyptic number.

It is an amenable number.

131446464 is an abundant number, since it is smaller than the sum of its proper divisors (216339480).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131446464 is an equidigital number, since it uses as much as digits as its factorization.

131446464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 684632 (or 684622 counting only the distinct ones).

The product of its digits is 27648, while the sum is 33.

The square root of 131446464 is about 11465.0104230219. The cubic root of 131446464 is about 508.4516206200.

The spelling of 131446464 in words is "one hundred thirty-one million, four hundred forty-six thousand, four hundred sixty-four".