631953045 has 48 divisors (see below), whose sum is σ = 1117658880. Its totient is φ = 330244992.

The previous prime is 631953041. The next prime is 631953089. The reversal of 631953045 is 540359136.

It is not a de Polignac number, because 631953045 - 2² = 631953041 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631953041) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 720147 + ... + 721023.

It is an arithmetic number, because the mean of its divisors is an integer number (23284560).

Almost surely, 2^631953045 is an apocalyptic number.

It is an amenable number.

631953045 is a deficient number, since it is larger than the sum of its proper divisors (485705835).

631953045 is a wasteful number, since it uses less digits than its factorization.

631953045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1194 (or 1191 counting only the distinct ones).

The product of its (nonzero) digits is 48600, while the sum is 36.

The square root of 631953045 is about 25138.6762777995. The cubic root of 631953045 is about 858.1468320928.

The spelling of 631953045 in words is "six hundred thirty-one million, nine hundred fifty-three thousand, forty-five".