130000731 has 16 divisors (see below), whose sum is σ = 202312704. Its totient is φ = 72705024.

The previous prime is 130000697. The next prime is 130000753. The reversal of 130000731 is 137000031.

It is not a de Polignac number, because 130000731 - 2⁶ = 130000667 is a prime.

It is a super-2 number, since 2×130000731² = 33800380121068722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 130000731.

It is not an unprimeable number, because it can be changed into a prime (130001731) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64870 + ... + 66843.

It is an arithmetic number, because the mean of its divisors is an integer number (12644544).

Almost surely, 2^130000731 is an apocalyptic number.

130000731 is a deficient number, since it is larger than the sum of its proper divisors (72311973).

130000731 is a wasteful number, since it uses less digits than its factorization.

130000731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131770.

The product of its (nonzero) digits is 63, while the sum is 15.

The square root of 130000731 is about 11401.7863074169. The cubic root of 130000731 is about 506.5806514205.

Adding to 130000731 its reverse (137000031), we get a palindrome (267000762).

The spelling of 130000731 in words is "one hundred thirty million, seven hundred thirty-one", and thus it is an aban number.