631012200 has 432 divisors, whose sum is σ = 2483412480. Its totient is φ = 132088320.

The previous prime is 631012183. The next prime is 631012201. The reversal of 631012200 is 2210136.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 631012200.

It is not an unprimeable number, because it can be changed into a prime (631012201) by changing a digit.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 4968537 + ... + 4968663.

It is an arithmetic number, because the mean of its divisors is an integer number (5748640).

Almost surely, 2^631012200 is an apocalyptic number.

631012200 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 631012200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1241706240).

631012200 is an abundant number, since it is smaller than the sum of its proper divisors (1852400280).

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

631012200 is a wasteful number, since it uses less digits than its factorization.

631012200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186 (or 157 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 631012200 is about 25119.9562101529. The cubic root of 631012200 is about 857.7207539377.

Adding to 631012200 its reverse (2210136), we get a palindrome (633222336).

The spelling of 631012200 in words is "six hundred thirty-one million, twelve thousand, two hundred".