1310997228 has 48 divisors (see below), whose sum is σ = 3293861760. Its totient is φ = 404318464.

The previous prime is 1310997221. The next prime is 1310997269. The reversal of 1310997228 is 8227990131.

It is a self number, because there is not a number n which added to its sum of digits gives 1310997228.

It is not an unprimeable number, because it can be changed into a prime (1310997221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42426 + ... + 66497.

It is an arithmetic number, because the mean of its divisors is an integer number (68622120).

Almost surely, 2^1310997228 is an apocalyptic number.

It is an amenable number.

1310997228 is an abundant number, since it is smaller than the sum of its proper divisors (1982864532).

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

1310997228 is a wasteful number, since it uses less digits than its factorization.

1310997228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109006 (or 109004 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 42.

The square root of 1310997228 is about 36207.6957013285. The cubic root of 1310997228 is about 1094.4617575322.

The spelling of 1310997228 in words is "one billion, three hundred ten million, nine hundred ninety-seven thousand, two hundred twenty-eight".