131190623 has 4 divisors (see below), whose sum is σ = 133148760. Its totient is φ = 129232488.

The previous prime is 131190607. The next prime is 131190679. The reversal of 131190623 is 326091131.

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 131190623 - 2⁴ = 131190607 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131190592 and 131190601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131190223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 978968 + ... + 979101.

It is an arithmetic number, because the mean of its divisors is an integer number (33287190).

Almost surely, 2^131190623 is an apocalyptic number.

131190623 is a deficient number, since it is larger than the sum of its proper divisors (1958137).

131190623 is an equidigital number, since it uses as much as digits as its factorization.

131190623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1958136.

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 131190623 is about 11453.8475195019. The cubic root of 131190623 is about 508.1215312080.

The spelling of 131190623 in words is "one hundred thirty-one million, one hundred ninety thousand, six hundred twenty-three".