631546145 has 32 divisors (see below), whose sum is σ = 792529920. Its totient is φ = 482826240.

The previous prime is 631546133. The next prime is 631546147. The reversal of 631546145 is 541645136.

It is not a de Polignac number, because 631546145 - 2⁴ = 631546129 is a prime.

It is a super-2 number, since 2×631546145² = 797701066528722050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (631546147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2030540 + ... + 2030850.

It is an arithmetic number, because the mean of its divisors is an integer number (24766560).

Almost surely, 2^631546145 is an apocalyptic number.

It is an amenable number.

631546145 is a deficient number, since it is larger than the sum of its proper divisors (160983775).

631546145 is a wasteful number, since it uses less digits than its factorization.

631546145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 545.

The product of its digits is 43200, while the sum is 35.

The square root of 631546145 is about 25130.5818675175. The cubic root of 631546145 is about 857.9626122268.

The spelling of 631546145 in words is "six hundred thirty-one million, five hundred forty-six thousand, one hundred forty-five".