131224006 has 4 divisors (see below), whose sum is σ = 196836012. Its totient is φ = 65612002.

The previous prime is 131223991. The next prime is 131224007. The reversal of 131224006 is 600422131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 600422131 = 3457 ⋅173683.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131224007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32806000 + ... + 32806003.

It is an arithmetic number, because the mean of its divisors is an integer number (49209003).

Almost surely, 2^131224006 is an apocalyptic number.

131224006 is a deficient number, since it is larger than the sum of its proper divisors (65612006).

131224006 is an equidigital number, since it uses as much as digits as its factorization.

131224006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65612005.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 131224006 is about 11455.3047100459. The cubic root of 131224006 is about 508.1646267233.

Adding to 131224006 its reverse (600422131), we get a palindrome (731646137).

The spelling of 131224006 in words is "one hundred thirty-one million, two hundred twenty-four thousand, six".