756138231 has 12 divisors (see below), whose sum is σ = 1149684120. Its totient is φ = 477560880.

The previous prime is 756138203. The next prime is 756138239. The reversal of 756138231 is 132831657.

756138231 is a `hidden beast` number, since 7 + 5 + 613 + 8 + 2 + 31 = 666.

756138231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 756138231 - 2⁶ = 756138167 is a prime.

It is a super-2 number, since 2×756138231² = 1143490048759618722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (756138239) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2210760 + ... + 2211101.

It is an arithmetic number, because the mean of its divisors is an integer number (95807010).

Almost surely, 2^756138231 is an apocalyptic number.

756138231 is a deficient number, since it is larger than the sum of its proper divisors (393545889).

756138231 is a wasteful number, since it uses less digits than its factorization.

756138231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4421886 (or 4421883 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 756138231 is about 27497.9677612728. The cubic root of 756138231 is about 911.0322107624.

Adding to 756138231 its reverse (132831657), we get a palindrome (888969888).

The spelling of 756138231 in words is "seven hundred fifty-six million, one hundred thirty-eight thousand, two hundred thirty-one".