131420073 has 4 divisors (see below), whose sum is σ = 175226768. Its totient is φ = 87613380.

The previous prime is 131420071. The next prime is 131420111. The reversal of 131420073 is 370024131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 131420073 - 2¹ = 131420071 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131420071) 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, 21903343 + ... + 21903348.

It is an arithmetic number, because the mean of its divisors is an integer number (43806692).

Almost surely, 2^131420073 is an apocalyptic number.

It is an amenable number.

131420073 is a deficient number, since it is larger than the sum of its proper divisors (43806695).

131420073 is an equidigital number, since it uses as much as digits as its factorization.

131420073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43806694.

The product of its (nonzero) digits is 504, while the sum is 21.

The square root of 131420073 is about 11463.8594286567. The cubic root of 131420073 is about 508.4175904289.

The spelling of 131420073 in words is "one hundred thirty-one million, four hundred twenty thousand, seventy-three".