73031047 has 2 divisors, whose sum is σ = 73031048. Its totient is φ = 73031046.

The previous prime is 73031033. The next prime is 73031051. The reversal of 73031047 is 74013037.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73031047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73031027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36515523 + 36515524.

It is an arithmetic number, because the mean of its divisors is an integer number (36515524).

Almost surely, 2^73031047 is an apocalyptic number.

73031047 is a deficient number, since it is larger than the sum of its proper divisors (1).

73031047 is an equidigital number, since it uses as much as digits as its factorization.

73031047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1764, while the sum is 25.

The square root of 73031047 is about 8545.8204404258. The cubic root of 73031047 is about 417.9931605300.

The spelling of 73031047 in words is "seventy-three million, thirty-one thousand, forty-seven".