631142027 has 2 divisors, whose sum is σ = 631142028. Its totient is φ = 631142026.

The previous prime is 631142023. The next prime is 631142033. The reversal of 631142027 is 720241136.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 631142027 - 2² = 631142023 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 631141987 and 631142005.

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, 315571013 + 315571014.

It is an arithmetic number, because the mean of its divisors is an integer number (315571014).

Almost surely, 2^631142027 is an apocalyptic number.

631142027 is a deficient number, since it is larger than the sum of its proper divisors (1).

631142027 is an equidigital number, since it uses as much as digits as its factorization.

631142027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 631142027 is about 25122.5402178999. The cubic root of 631142027 is about 857.7795735487.

The spelling of 631142027 in words is "six hundred thirty-one million, one hundred forty-two thousand, twenty-seven".