131226238 has 32 divisors (see below), whose sum is σ = 231985152. Its totient is φ = 54885600.

The previous prime is 131226233. The next prime is 131226253. The reversal of 131226238 is 832622131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131226233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 131923 + ... + 132913.

It is an arithmetic number, because the mean of its divisors is an integer number (7249536).

Almost surely, 2^131226238 is an apocalyptic number.

131226238 is a deficient number, since it is larger than the sum of its proper divisors (100758914).

131226238 is a wasteful number, since it uses less digits than its factorization.

131226238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1480.

The product of its digits is 3456, while the sum is 28.

The square root of 131226238 is about 11455.4021317455. The cubic root of 131226238 is about 508.1675078450.

Adding to 131226238 its reverse (832622131), we get a palindrome (963848369).

The spelling of 131226238 in words is "one hundred thirty-one million, two hundred twenty-six thousand, two hundred thirty-eight".