1031198216 has 16 divisors (see below), whose sum is σ = 1980655740. Its totient is φ = 503023360.

The previous prime is 1031198213. The next prime is 1031198237. The reversal of 1031198216 is 6128911301.

It can be written as a sum of positive squares in 2 ways, for example, as 673610116 + 357588100 = 25954^2 + 18910^2 .

It is not an unprimeable number, because it can be changed into a prime (1031198213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1571621 + ... + 1572276.

Almost surely, 2^1031198216 is an apocalyptic number.

It is an amenable number.

1031198216 is a deficient number, since it is larger than the sum of its proper divisors (949457524).

1031198216 is a wasteful number, since it uses less digits than its factorization.

1031198216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3143944 (or 3143940 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 32.

The square root of 1031198216 is about 32112.2751607543. The cubic root of 1031198216 is about 1010.2930940383.

The spelling of 1031198216 in words is "one billion, thirty-one million, one hundred ninety-eight thousand, two hundred sixteen".