531013487 has 2 divisors, whose sum is σ = 531013488. Its totient is φ = 531013486.

The previous prime is 531013471. The next prime is 531013523. The reversal of 531013487 is 784310135.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 531013487 - 2⁴ = 531013471 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (531013187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265506743 + 265506744.

It is an arithmetic number, because the mean of its divisors is an integer number (265506744).

Almost surely, 2^531013487 is an apocalyptic number.

531013487 is a deficient number, since it is larger than the sum of its proper divisors (1).

531013487 is an equidigital number, since it uses as much as digits as its factorization.

531013487 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 531013487 is about 23043.7298847214. The cubic root of 531013487 is about 809.7827426268.

The spelling of 531013487 in words is "five hundred thirty-one million, thirteen thousand, four hundred eighty-seven".