131673793 has 2 divisors, whose sum is σ = 131673794. Its totient is φ = 131673792.

The previous prime is 131673769. The next prime is 131673797. The reversal of 131673793 is 397376131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 129777664 + 1896129 = 11392^2 + 1377^2 .

It is an emirp because it is prime and its reverse (397376131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 131673793 - 2⁵ = 131673761 is a prime.

It is not a weakly prime, because it can be changed into another prime (131673797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65836896 + 65836897.

It is an arithmetic number, because the mean of its divisors is an integer number (65836897).

Almost surely, 2^131673793 is an apocalyptic number.

It is an amenable number.

131673793 is a deficient number, since it is larger than the sum of its proper divisors (1).

131673793 is an equidigital number, since it uses as much as digits as its factorization.

131673793 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 71442, while the sum is 40.

The square root of 131673793 is about 11474.9201740143. The cubic root of 131673793 is about 508.7445642918.

The spelling of 131673793 in words is "one hundred thirty-one million, six hundred seventy-three thousand, seven hundred ninety-three".