131344736 has 12 divisors (see below), whose sum is σ = 258585012. Its totient is φ = 65672352.

The previous prime is 131344729. The next prime is 131344753. The reversal of 131344736 is 637443131.

It is a Harshad number since it is a multiple of its sum of digits (32), and also a Moran number because the ratio is a prime number: 4104523 = 131344736 / (1 + 3 + 1 + 3 + 4 + 4 + 7 + 3 + 6).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2052230 + ... + 2052293.

It is an arithmetic number, because the mean of its divisors is an integer number (21548751).

Almost surely, 2^131344736 is an apocalyptic number.

131344736 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

131344736 is a deficient number, since it is larger than the sum of its proper divisors (127240276).

131344736 is an equidigital number, since it uses as much as digits as its factorization.

131344736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4104533 (or 4104525 counting only the distinct ones).

The product of its digits is 18144, while the sum is 32.

The square root of 131344736 is about 11460.5731095788. The cubic root of 131344736 is about 508.3204211597.

Adding to 131344736 its reverse (637443131), we get a palindrome (768787867).

The spelling of 131344736 in words is "one hundred thirty-one million, three hundred forty-four thousand, seven hundred thirty-six".