731023133 has 2 divisors, whose sum is σ = 731023134. Its totient is φ = 731023132.

The previous prime is 731023123. The next prime is 731023147. The reversal of 731023133 is 331320137.

It is a happy number.

731023133 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., 425927044 + 305096089 = 20638^2 + 17467^2 .

It is an emirp because it is prime and its reverse (331320137) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-731023133 is a prime.

It is a super-2 number, since 2×731023133² = 1068789641962271378, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 731023099 and 731023108.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (731023123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 365511566 + 365511567.

It is an arithmetic number, because the mean of its divisors is an integer number (365511567).

Almost surely, 2^731023133 is an apocalyptic number.

It is an amenable number.

731023133 is a deficient number, since it is larger than the sum of its proper divisors (1).

731023133 is an equidigital number, since it uses as much as digits as its factorization.

731023133 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1134, while the sum is 23.

The square root of 731023133 is about 27037.4394682633. The cubic root of 731023133 is about 900.8317960230.

The spelling of 731023133 in words is "seven hundred thirty-one million, twenty-three thousand, one hundred thirty-three".