631148995 has 16 divisors (see below), whose sum is σ = 785940480. Its totient is φ = 486050400.

The previous prime is 631148981. The next prime is 631149031. The reversal of 631148995 is 599841136.

631148995 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 631148995 - 2¹⁷ = 631017923 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18946 + ... + 40264.

It is an arithmetic number, because the mean of its divisors is an integer number (49121280).

Almost surely, 2^631148995 is an apocalyptic number.

631148995 is a deficient number, since it is larger than the sum of its proper divisors (154791485).

631148995 is a wasteful number, since it uses less digits than its factorization.

631148995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21546.

The product of its digits is 233280, while the sum is 46.

The square root of 631148995 is about 25122.6788977609. The cubic root of 631148995 is about 857.7827302529.

The spelling of 631148995 in words is "six hundred thirty-one million, one hundred forty-eight thousand, nine hundred ninety-five".