631125155 has 8 divisors (see below), whose sum is σ = 757803600. Its totient is φ = 504597856.

The previous prime is 631125107. The next prime is 631125167. The reversal of 631125155 is 551521136.

631125155 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 631125155 - 2⁶ = 631125091 is a prime.

It is a super-2 number, since 2×631125155² = 796637922547548050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28385 + ... + 45474.

It is an arithmetic number, because the mean of its divisors is an integer number (94725450).

Almost surely, 2^631125155 is an apocalyptic number.

631125155 is a deficient number, since it is larger than the sum of its proper divisors (126678445).

631125155 is a wasteful number, since it uses less digits than its factorization.

631125155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75573.

The product of its digits is 4500, while the sum is 29.

The square root of 631125155 is about 25122.2044215869. The cubic root of 631125155 is about 857.7719299517.

The spelling of 631125155 in words is "six hundred thirty-one million, one hundred twenty-five thousand, one hundred fifty-five".