731413621109 has 2 divisors, whose sum is σ = 731413621110. Its totient is φ = 731413621108.

The previous prime is 731413621069. The next prime is 731413621157. The reversal of 731413621109 is 901126314137.

It is a happy number.

731413621109 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 670056844900 + 61356776209 = 818570^2 + 247703^2 .

It is a cyclic number.

It is not a de Polignac number, because 731413621109 - 2¹⁶ = 731413555573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (731413620109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 365706810554 + 365706810555.

It is an arithmetic number, because the mean of its divisors is an integer number (365706810555).

Almost surely, 2^731413621109 is an apocalyptic number.

It is an amenable number.

731413621109 is a deficient number, since it is larger than the sum of its proper divisors (1).

731413621109 is an equidigital number, since it uses as much as digits as its factorization.

731413621109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 38.

The spelling of 731413621109 in words is "seven hundred thirty-one billion, four hundred thirteen million, six hundred twenty-one thousand, one hundred nine".