729245031 has 16 divisors (see below), whose sum is σ = 978531840. Its totient is φ = 483070400.

The previous prime is 729245021. The next prime is 729245053. The reversal of 729245031 is 130542927.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-729245031 is a prime.

It is a super-2 number, since 2×729245031² = 1063596630476381922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 729244983 and 729245001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (729245021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 501856 + ... + 503306.

It is an arithmetic number, because the mean of its divisors is an integer number (61158240).

Almost surely, 2^729245031 is an apocalyptic number.

729245031 is a deficient number, since it is larger than the sum of its proper divisors (249286809).

729245031 is a wasteful number, since it uses less digits than its factorization.

729245031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2406.

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 729245031 is about 27004.5372298805. The cubic root of 729245031 is about 900.1008245070.

Adding to 729245031 its reverse (130542927), we get a palindrome (859787958).

The spelling of 729245031 in words is "seven hundred twenty-nine million, two hundred forty-five thousand, thirty-one".