1321325251730 has 32 divisors (see below), whose sum is σ = 2664726707520. Its totient is φ = 467495910720.

The previous prime is 1321325251721. The next prime is 1321325251733. The reversal of 1321325251730 is 371525231231.

It is not an unprimeable number, because it can be changed into a prime (1321325251733) 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, 162320900 + ... + 162329039.

It is an arithmetic number, because the mean of its divisors is an integer number (83272709610).

Almost surely, 2^{1321325251730} is an apocalyptic number.

1321325251730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1321325251730 is an abundant number, since it is smaller than the sum of its proper divisors (1343401455790).

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

1321325251730 is a wasteful number, since it uses less digits than its factorization.

1321325251730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324649994.

The product of its (nonzero) digits is 37800, while the sum is 35.

The spelling of 1321325251730 in words is "one trillion, three hundred twenty-one billion, three hundred twenty-five million, two hundred fifty-one thousand, seven hundred thirty".