72031163 has 2 divisors, whose sum is σ = 72031164. Its totient is φ = 72031162.

The previous prime is 72031151. The next prime is 72031181. The reversal of 72031163 is 36113027.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72031163 - 2¹⁴ = 72014779 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is equal to p_4230383 and since 72031163 and 4230383 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (72031123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36015581 + 36015582.

It is an arithmetic number, because the mean of its divisors is an integer number (36015582).

Almost surely, 2^72031163 is an apocalyptic number.

72031163 is a deficient number, since it is larger than the sum of its proper divisors (1).

72031163 is an equidigital number, since it uses as much as digits as its factorization.

72031163 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 756, while the sum is 23.

The square root of 72031163 is about 8487.1174729704. The cubic root of 72031163 is about 416.0767760015.

The spelling of 72031163 in words is "seventy-two million, thirty-one thousand, one hundred sixty-three".