631150220 has 12 divisors (see below), whose sum is σ = 1325415504. Its totient is φ = 252460080.

The previous prime is 631150217. The next prime is 631150231. The reversal of 631150220 is 22051136.

631150220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 31557511 = 631150220 / (6 + 3 + 1 + 1 + 5 + 0 + 2 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 631150192 and 631150201.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15778736 + ... + 15778775.

It is an arithmetic number, because the mean of its divisors is an integer number (110451292).

Almost surely, 2^631150220 is an apocalyptic number.

It is an amenable number.

631150220 is an abundant number, since it is smaller than the sum of its proper divisors (694265284).

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

631150220 is a wasteful number, since it uses less digits than its factorization.

631150220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31557520 (or 31557518 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 631150220 is about 25122.7032781108. The cubic root of 631150220 is about 857.7832852107.

The spelling of 631150220 in words is "six hundred thirty-one million, one hundred fifty thousand, two hundred twenty".