631104212 has 6 divisors (see below), whose sum is σ = 1104432378. Its totient is φ = 315552104.

The previous prime is 631104211. The next prime is 631104217. The reversal of 631104212 is 212401136.

It can be written as a sum of positive squares in only one way, i.e., 389115076 + 241989136 = 19726^2 + 15556^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631104211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78888023 + ... + 78888030.

It is an arithmetic number, because the mean of its divisors is an integer number (184072063).

Almost surely, 2^631104212 is an apocalyptic number.

It is an amenable number.

631104212 is a deficient number, since it is larger than the sum of its proper divisors (473328166).

631104212 is a wasteful number, since it uses less digits than its factorization.

631104212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157776057 (or 157776055 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 631104212 is about 25121.7875956310. The cubic root of 631104212 is about 857.7624418620.

Adding to 631104212 its reverse (212401136), we get a palindrome (843505348).

The spelling of 631104212 in words is "six hundred thirty-one million, one hundred four thousand, two hundred twelve".