1297319000 has 64 divisors (see below), whose sum is σ = 3133728000. Its totient is φ = 502176000.

The previous prime is 1297318937. The next prime is 1297319003. The reversal of 1297319000 is 9137921.

It is a happy number.

It is a super-2 number, since 2×1297319000² = 3366073175522000000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1297319003) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 10076 + ... + 51924.

It is an arithmetic number, because the mean of its divisors is an integer number (48964500).

Almost surely, 2^1297319000 is an apocalyptic number.

1297319000 is a gapful number since it is divisible by the number (10) 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 1297319000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1566864000).

1297319000 is an abundant number, since it is smaller than the sum of its proper divisors (1836409000).

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

1297319000 is a wasteful number, since it uses less digits than its factorization.

1297319000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41901 (or 41887 counting only the distinct ones).

The product of its (nonzero) digits is 3402, while the sum is 32.

The square root of 1297319000 is about 36018.3147856754. The cubic root of 1297319000 is about 1090.6421040659.

The spelling of 1297319000 in words is "one billion, two hundred ninety-seven million, three hundred nineteen thousand".