531398363 has 2 divisors, whose sum is σ = 531398364. Its totient is φ = 531398362.

The previous prime is 531398347. The next prime is 531398369. The reversal of 531398363 is 363893135.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 531398363 - 2⁴ = 531398347 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 531398363.

It is not a weakly prime, because it can be changed into another prime (531398369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265699181 + 265699182.

It is an arithmetic number, because the mean of its divisors is an integer number (265699182).

Almost surely, 2^531398363 is an apocalyptic number.

531398363 is a deficient number, since it is larger than the sum of its proper divisors (1).

531398363 is an equidigital number, since it uses as much as digits as its factorization.

531398363 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 174960, while the sum is 41.

The square root of 531398363 is about 23052.0793639099. The cubic root of 531398363 is about 809.9783375805.

The spelling of 531398363 in words is "five hundred thirty-one million, three hundred ninety-eight thousand, three hundred sixty-three".