131226656 has 24 divisors (see below), whose sum is σ = 281839824. Its totient is φ = 59648320.

The previous prime is 131226647. The next prime is 131226659. The reversal of 131226656 is 656622131.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is not an unprimeable number, because it can be changed into a prime (131226659) 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, 186050 + ... + 186753.

It is an arithmetic number, because the mean of its divisors is an integer number (11743326).

Almost surely, 2^131226656 is an apocalyptic number.

131226656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

131226656 is an abundant number, since it is smaller than the sum of its proper divisors (150613168).

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

131226656 is a wasteful number, since it uses less digits than its factorization.

131226656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372824 (or 372816 counting only the distinct ones).

The product of its digits is 12960, while the sum is 32.

The square root of 131226656 is about 11455.4203763982. The cubic root of 131226656 is about 508.1680474063.

Adding to 131226656 its reverse (656622131), we get a palindrome (787848787).

The spelling of 131226656 in words is "one hundred thirty-one million, two hundred twenty-six thousand, six hundred fifty-six".