1345341021 has 8 divisors (see below), whose sum is σ = 1794180864. Its totient is φ = 896697600.

The previous prime is 1345340977. The next prime is 1345341073. The reversal of 1345341021 is 1201435431.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1345341021 - 2¹⁵ = 1345308253 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1345340982 and 1345341000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1345342021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32301 + ... + 61106.

It is an arithmetic number, because the mean of its divisors is an integer number (224272608).

Almost surely, 2^1345341021 is an apocalyptic number.

It is an amenable number.

1345341021 is a deficient number, since it is larger than the sum of its proper divisors (448839843).

1345341021 is an equidigital number, since it uses as much as digits as its factorization.

1345341021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98211.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 1345341021 is about 36678.8906729743. The cubic root of 1345341021 is about 1103.9365897404.

Adding to 1345341021 its reverse (1201435431), we get a palindrome (2546776452).

The spelling of 1345341021 in words is "one billion, three hundred forty-five million, three hundred forty-one thousand, twenty-one".