723256567381 has 2 divisors, whose sum is σ = 723256567382. Its totient is φ = 723256567380.

The previous prime is 723256567367. The next prime is 723256567387. The reversal of 723256567381 is 183765652327.

723256567381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 464108375025 + 259148192356 = 681255^2 + 509066^2 .

It is a cyclic number.

It is not a de Polignac number, because 723256567381 - 2³³ = 714666632789 is a prime.

It is a super-2 number, since 2×723256567381² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (723256567387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361628283690 + 361628283691.

It is an arithmetic number, because the mean of its divisors is an integer number (361628283691).

Almost surely, 2^723256567381 is an apocalyptic number.

It is an amenable number.

723256567381 is a deficient number, since it is larger than the sum of its proper divisors (1).

723256567381 is an equidigital number, since it uses as much as digits as its factorization.

723256567381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12700800, while the sum is 55.

The spelling of 723256567381 in words is "seven hundred twenty-three billion, two hundred fifty-six million, five hundred sixty-seven thousand, three hundred eighty-one".