531872347 has 2 divisors, whose sum is σ = 531872348. Its totient is φ = 531872346.

The previous prime is 531872311. The next prime is 531872417. The reversal of 531872347 is 743278135.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 531872347 - 2⁷ = 531872219 is a prime.

It is not a weakly prime, because it can be changed into another prime (571872347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265936173 + 265936174.

It is an arithmetic number, because the mean of its divisors is an integer number (265936174).

Almost surely, 2^531872347 is an apocalyptic number.

531872347 is a deficient number, since it is larger than the sum of its proper divisors (1).

531872347 is an equidigital number, since it uses as much as digits as its factorization.

531872347 is an evil number, because the sum of its binary digits is even.

The product of its digits is 141120, while the sum is 40.

The square root of 531872347 is about 23062.3577935995. The cubic root of 531872347 is about 810.2190877157.

The spelling of 531872347 in words is "five hundred thirty-one million, eight hundred seventy-two thousand, three hundred forty-seven".