131623243 has 8 divisors (see below), whose sum is σ = 136543680. Its totient is φ = 126784320.

The previous prime is 131623223. The next prime is 131623249. The reversal of 131623243 is 342326131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 131623243 - 2⁹ = 131622731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131623249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17080 + ... + 23557.

It is an arithmetic number, because the mean of its divisors is an integer number (17067960).

Almost surely, 2^131623243 is an apocalyptic number.

131623243 is a deficient number, since it is larger than the sum of its proper divisors (4920437).

131623243 is an equidigital number, since it uses as much as digits as its factorization.

131623243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40757.

The product of its digits is 2592, while the sum is 25.

The square root of 131623243 is about 11472.7173328728. The cubic root of 131623243 is about 508.6794530580.

Adding to 131623243 its reverse (342326131), we get a palindrome (473949374).

The spelling of 131623243 in words is "one hundred thirty-one million, six hundred twenty-three thousand, two hundred forty-three".