131433073 has 4 divisors (see below), whose sum is σ = 133016688. Its totient is φ = 129849460.

The previous prime is 131433067. The next prime is 131433079. The reversal of 131433073 is 370334131.

It is a happy number.

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 an interprime number because it is at equal distance from previous prime (131433067) and next prime (131433079).

It is a cyclic number.

It is not a de Polignac number, because 131433073 - 2⁵ = 131433041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131433079) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 791683 + ... + 791848.

It is an arithmetic number, because the mean of its divisors is an integer number (33254172).

Almost surely, 2^131433073 is an apocalyptic number.

It is an amenable number.

131433073 is a deficient number, since it is larger than the sum of its proper divisors (1583615).

131433073 is an equidigital number, since it uses as much as digits as its factorization.

131433073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1583614.

The product of its (nonzero) digits is 2268, while the sum is 25.

The square root of 131433073 is about 11464.4264139119. The cubic root of 131433073 is about 508.4343540040.

The spelling of 131433073 in words is "one hundred thirty-one million, four hundred thirty-three thousand, seventy-three".