131971248 has 40 divisors (see below), whose sum is σ = 378807600. Its totient is φ = 43990272.

The previous prime is 131971223. The next prime is 131971261. The reversal of 131971248 is 842179131.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152313 + ... + 153176.

It is an arithmetic number, because the mean of its divisors is an integer number (9470190).

Almost surely, 2^131971248 is an apocalyptic number.

131971248 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

131971248 is an abundant number, since it is smaller than the sum of its proper divisors (246836352).

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

131971248 is a wasteful number, since it uses less digits than its factorization.

131971248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305506 (or 305494 counting only the distinct ones).

The product of its digits is 12096, while the sum is 36.

The square root of 131971248 is about 11487.8739547403. The cubic root of 131971248 is about 509.1273658648.

The spelling of 131971248 in words is "one hundred thirty-one million, nine hundred seventy-one thousand, two hundred forty-eight".