531162361 has 2 divisors, whose sum is σ = 531162362. Its totient is φ = 531162360.

The previous prime is 531162349. The next prime is 531162377. The reversal of 531162361 is 163261135.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 337089600 + 194072761 = 18360^2 + 13931^2 .

It is a cyclic number.

It is not a de Polignac number, because 531162361 - 2⁹ = 531161849 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (531162311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265581180 + 265581181.

It is an arithmetic number, because the mean of its divisors is an integer number (265581181).

Almost surely, 2^531162361 is an apocalyptic number.

It is an amenable number.

531162361 is a deficient number, since it is larger than the sum of its proper divisors (1).

531162361 is an equidigital number, since it uses as much as digits as its factorization.

531162361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3240, while the sum is 28.

The square root of 531162361 is about 23046.9599079792. The cubic root of 531162361 is about 809.8584119739.

The spelling of 531162361 in words is "five hundred thirty-one million, one hundred sixty-two thousand, three hundred sixty-one".