131123232073 has 2 divisors, whose sum is σ = 131123232074. Its totient is φ = 131123232072.

The previous prime is 131123232067. The next prime is 131123232137. The reversal of 131123232073 is 370232321131.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 127140738624 + 3982493449 = 356568^2 + 63107^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131123232073 is a prime.

It is not a weakly prime, because it can be changed into another prime (131123236073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65561616036 + 65561616037.

It is an arithmetic number, because the mean of its divisors is an integer number (65561616037).

Almost surely, 2^131123232073 is an apocalyptic number.

It is an amenable number.

131123232073 is a deficient number, since it is larger than the sum of its proper divisors (1).

131123232073 is an equidigital number, since it uses as much as digits as its factorization.

131123232073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 28.

The spelling of 131123232073 in words is "one hundred thirty-one billion, one hundred twenty-three million, two hundred thirty-two thousand, seventy-three".