1321130610 has 48 divisors (see below), whose sum is σ = 3615730560. Its totient is φ = 333758880.

The previous prime is 1321130609. The next prime is 1321130611. The reversal of 1321130610 is 160311231.

1321130610 is a `hidden beast` number, since 1 + 3 + 21 + 1 + 30 + 610 = 666.

It is an interprime number because it is at equal distance from previous prime (1321130609) and next prime (1321130611).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1321130611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 384586 + ... + 388005.

It is an arithmetic number, because the mean of its divisors is an integer number (75327720).

Almost surely, 2^1321130610 is an apocalyptic number.

1321130610 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1321130610 is an abundant number, since it is smaller than the sum of its proper divisors (2294599950).

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

1321130610 is a wasteful number, since it uses less digits than its factorization.

1321130610 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 772623 (or 772620 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 1321130610 is about 36347.3604268591. The cubic root of 1321130610 is about 1097.2744118752.

Adding to 1321130610 its reverse (160311231), we get a palindrome (1481441841).

The spelling of 1321130610 in words is "one billion, three hundred twenty-one million, one hundred thirty thousand, six hundred ten".