1340100321 has 32 divisors (see below), whose sum is σ = 2073523200. Its totient is φ = 754035264.

The previous prime is 1340100287. The next prime is 1340100337. The reversal of 1340100321 is 1230010431.

It is not a de Polignac number, because 1340100321 - 2⁶ = 1340100257 is a prime.

It is a super-3 number, since 3×1340100321³ (a number of 28 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1340100321.

It is not an unprimeable number, because it can be changed into a prime (1340102321) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 607206 + ... + 609408.

It is an arithmetic number, because the mean of its divisors is an integer number (64797600).

Almost surely, 2^1340100321 is an apocalyptic number.

It is an amenable number.

1340100321 is a deficient number, since it is larger than the sum of its proper divisors (733422879).

1340100321 is a wasteful number, since it uses less digits than its factorization.

1340100321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2645.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1340100321 is about 36607.3806902379. The cubic root of 1340100321 is about 1102.5012835172.

Adding to 1340100321 its reverse (1230010431), we get a palindrome (2570110752).

The spelling of 1340100321 in words is "one billion, three hundred forty million, one hundred thousand, three hundred twenty-one".