73131231071 has 2 divisors, whose sum is σ = 73131231072. Its totient is φ = 73131231070.

The previous prime is 73131231013. The next prime is 73131231077. The reversal of 73131231071 is 17013213137.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 73131231071 - 2⁶ = 73131231007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73131231077) 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 as a sum of consecutive naturals, namely, 36565615535 + 36565615536.

It is an arithmetic number, because the mean of its divisors is an integer number (36565615536).

Almost surely, 2^73131231071 is an apocalyptic number.

73131231071 is a deficient number, since it is larger than the sum of its proper divisors (1).

73131231071 is an equidigital number, since it uses as much as digits as its factorization.

73131231071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2646, while the sum is 29.

The spelling of 73131231071 in words is "seventy-three billion, one hundred thirty-one million, two hundred thirty-one thousand, seventy-one".