631346545 has 8 divisors (see below), whose sum is σ = 764697024. Its totient is φ = 500356464.

The previous prime is 631346543. The next prime is 631346557. The reversal of 631346545 is 545643136.

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 631346545 - 2¹ = 631346543 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (631346543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 589509 + ... + 590578.

It is an arithmetic number, because the mean of its divisors is an integer number (95587128).

Almost surely, 2^631346545 is an apocalyptic number.

It is an amenable number.

631346545 is a deficient number, since it is larger than the sum of its proper divisors (133350479).

631346545 is a wasteful number, since it uses less digits than its factorization.

631346545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1180199.

The product of its digits is 129600, while the sum is 37.

The square root of 631346545 is about 25126.6102966556. The cubic root of 631346545 is about 857.8722164138.

The spelling of 631346545 in words is "six hundred thirty-one million, three hundred forty-six thousand, five hundred forty-five".