131226000 has 80 divisors (see below), whose sum is σ = 423091968. Its totient is φ = 34992000.

The previous prime is 131225993. The next prime is 131226019. The reversal of 131226000 is 622131.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4936 + ... + 16935.

Almost surely, 2^131226000 is an apocalyptic number.

131226000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131226000 is an abundant number, since it is smaller than the sum of its proper divisors (291865968).

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

131226000 is a wasteful number, since it uses less digits than its factorization.

131226000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21897 (or 21881 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 131226000 is about 11455.3917436288. The cubic root of 131226000 is about 508.1672006302.

Adding to 131226000 its reverse (622131), we get a palindrome (131848131).

The spelling of 131226000 in words is "one hundred thirty-one million, two hundred twenty-six thousand".