631242323 has 2 divisors, whose sum is σ = 631242324. Its totient is φ = 631242322.

The previous prime is 631242299. The next prime is 631242361. The reversal of 631242323 is 323242136.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 631242323 - 2⁸ = 631242067 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 631242292 and 631242301.

It is not a weakly prime, because it can be changed into another prime (631241323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315621161 + 315621162.

It is an arithmetic number, because the mean of its divisors is an integer number (315621162).

Almost surely, 2^631242323 is an apocalyptic number.

631242323 is a deficient number, since it is larger than the sum of its proper divisors (1).

631242323 is an equidigital number, since it uses as much as digits as its factorization.

631242323 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5184, while the sum is 26.

The square root of 631242323 is about 25124.5362743275. The cubic root of 631242323 is about 857.8250082790.

Adding to 631242323 its reverse (323242136), we get a palindrome (954484459).

The spelling of 631242323 in words is "six hundred thirty-one million, two hundred forty-two thousand, three hundred twenty-three".