131630326 has 4 divisors (see below), whose sum is σ = 197445492. Its totient is φ = 65815162.

The previous prime is 131630299. The next prime is 131630327. The reversal of 131630326 is 623036131.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 131630326.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131630327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32907580 + ... + 32907583.

It is an arithmetic number, because the mean of its divisors is an integer number (49361373).

Almost surely, 2^131630326 is an apocalyptic number.

131630326 is a deficient number, since it is larger than the sum of its proper divisors (65815166).

131630326 is an equidigital number, since it uses as much as digits as its factorization.

131630326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65815165.

The product of its (nonzero) digits is 1944, while the sum is 25.

The square root of 131630326 is about 11473.0260175771. The cubic root of 131630326 is about 508.6885773633.

Adding to 131630326 its reverse (623036131), we get a palindrome (754666457).

The spelling of 131630326 in words is "one hundred thirty-one million, six hundred thirty thousand, three hundred twenty-six".