531343247 has 2 divisors, whose sum is σ = 531343248. Its totient is φ = 531343246.

The previous prime is 531343237. The next prime is 531343259. The reversal of 531343247 is 742343135.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 531343247 - 2⁸ = 531342991 is a prime.

It is a super-2 number, since 2×531343247² = 564651292265006018, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (531343237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265671623 + 265671624.

It is an arithmetic number, because the mean of its divisors is an integer number (265671624).

Almost surely, 2^531343247 is an apocalyptic number.

531343247 is a deficient number, since it is larger than the sum of its proper divisors (1).

531343247 is an equidigital number, since it uses as much as digits as its factorization.

531343247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30240, while the sum is 32.

The square root of 531343247 is about 23050.8838659172. The cubic root of 531343247 is about 809.9503332855.

The spelling of 531343247 in words is "five hundred thirty-one million, three hundred forty-three thousand, two hundred forty-seven".