131349623 has 4 divisors (see below), whose sum is σ = 132384000. Its totient is φ = 130315248.

The previous prime is 131349611. The next prime is 131349629. The reversal of 131349623 is 326943131.

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

It is a cyclic number.

It is not a de Polignac number, because 131349623 - 2⁴ = 131349607 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 131349623.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131349629) 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 3 ways as a sum of consecutive naturals, for example, 516998 + ... + 517251.

It is an arithmetic number, because the mean of its divisors is an integer number (33096000).

Almost surely, 2^131349623 is an apocalyptic number.

131349623 is a deficient number, since it is larger than the sum of its proper divisors (1034377).

131349623 is a wasteful number, since it uses less digits than its factorization.

131349623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1034376.

The product of its digits is 11664, while the sum is 32.

The square root of 131349623 is about 11460.7863168284. The cubic root of 131349623 is about 508.3267255136.

The spelling of 131349623 in words is "one hundred thirty-one million, three hundred forty-nine thousand, six hundred twenty-three".