731437734073 has 2 divisors, whose sum is σ = 731437734074. Its totient is φ = 731437734072.

The previous prime is 731437733963. The next prime is 731437734089. The reversal of 731437734073 is 370437734137.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 424995774889 + 306441959184 = 651917^2 + 553572^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-731437734073 is a prime.

It is not a weakly prime, because it can be changed into another prime (731437744073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 365718867036 + 365718867037.

It is an arithmetic number, because the mean of its divisors is an integer number (365718867037).

Almost surely, 2^731437734073 is an apocalyptic number.

It is an amenable number.

731437734073 is a deficient number, since it is larger than the sum of its proper divisors (1).

731437734073 is an equidigital number, since it uses as much as digits as its factorization.

731437734073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3111696, while the sum is 49.

The spelling of 731437734073 in words is "seven hundred thirty-one billion, four hundred thirty-seven million, seven hundred thirty-four thousand, seventy-three".