631142023 has 2 divisors, whose sum is σ = 631142024. Its totient is φ = 631142022.

The previous prime is 631142021. The next prime is 631142027. The reversal of 631142023 is 320241136.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 631142023 - 2¹ = 631142021 is a prime.

Together with 631142021, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 631141985 and 631142003.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (631142021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315571011 + 315571012.

It is an arithmetic number, because the mean of its divisors is an integer number (315571012).

Almost surely, 2^631142023 is an apocalyptic number.

631142023 is a deficient number, since it is larger than the sum of its proper divisors (1).

631142023 is an equidigital number, since it uses as much as digits as its factorization.

631142023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 631142023 is about 25122.5401382902. The cubic root of 631142023 is about 857.7795717366.

Adding to 631142023 its reverse (320241136), we get a palindrome (951383159).

The spelling of 631142023 in words is "six hundred thirty-one million, one hundred forty-two thousand, twenty-three".