1210561316 has 24 divisors (see below), whose sum is σ = 2146291224. Its totient is φ = 597381120.

The previous prime is 1210561309. The next prime is 1210561321. The reversal of 1210561316 is 6131650121.

It can be written as a sum of positive squares in 4 ways, for example, as 30913600 + 1179647716 = 5560^2 + 34346^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103376 + ... + 114488.

It is an arithmetic number, because the mean of its divisors is an integer number (89428801).

Almost surely, 2^1210561316 is an apocalyptic number.

It is an amenable number.

1210561316 is a deficient number, since it is larger than the sum of its proper divisors (935729908).

1210561316 is a wasteful number, since it uses less digits than its factorization.

1210561316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11471 (or 11469 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 1210561316 is about 34793.1216765613. The cubic root of 1210561316 is about 1065.7669880385.

The spelling of 1210561316 in words is "one billion, two hundred ten million, five hundred sixty-one thousand, three hundred sixteen".