631961148 has 48 divisors (see below), whose sum is σ = 1814865920. Its totient is φ = 166670784.

The previous prime is 631961117. The next prime is 631961177. The reversal of 631961148 is 841169136.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 288268 + ... + 290451.

Almost surely, 2^631961148 is an apocalyptic number.

It is an amenable number.

631961148 is an abundant number, since it is smaller than the sum of its proper divisors (1182904772).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

631961148 is a wasteful number, since it uses less digits than its factorization.

631961148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 578746 (or 578744 counting only the distinct ones).

The product of its digits is 31104, while the sum is 39.

The square root of 631961148 is about 25138.8374432868. The cubic root of 631961148 is about 858.1504998411.

The spelling of 631961148 in words is "six hundred thirty-one million, nine hundred sixty-one thousand, one hundred forty-eight".