531213673 has 2 divisors, whose sum is σ = 531213674. Its totient is φ = 531213672.

The previous prime is 531213667. The next prime is 531213691. The reversal of 531213673 is 376312135.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 485893849 + 45319824 = 22043^2 + 6732^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-531213673 is a prime.

It is not a weakly prime, because it can be changed into another prime (531213653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265606836 + 265606837.

It is an arithmetic number, because the mean of its divisors is an integer number (265606837).

Almost surely, 2^531213673 is an apocalyptic number.

It is an amenable number.

531213673 is a deficient number, since it is larger than the sum of its proper divisors (1).

531213673 is an equidigital number, since it uses as much as digits as its factorization.

531213673 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11340, while the sum is 31.

The square root of 531213673 is about 23048.0730864860. The cubic root of 531213673 is about 809.8844894471.

The spelling of 531213673 in words is "five hundred thirty-one million, two hundred thirteen thousand, six hundred seventy-three".