1341231021 has 16 divisors (see below), whose sum is σ = 2139856320. Its totient is φ = 825372720.

The previous prime is 1341231007. The next prime is 1341231043. The reversal of 1341231021 is 1201321431.

It is not a de Polignac number, because 1341231021 - 2¹⁹ = 1340706733 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1341230985 and 1341231003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1341231421) 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, 1910235 + ... + 1910936.

It is an arithmetic number, because the mean of its divisors is an integer number (133741020).

Almost surely, 2^1341231021 is an apocalyptic number.

It is an amenable number.

1341231021 is a deficient number, since it is larger than the sum of its proper divisors (798625299).

1341231021 is a wasteful number, since it uses less digits than its factorization.

1341231021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3821193 (or 3821187 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1341231021 is about 36622.8210409848. The cubic root of 1341231021 is about 1102.8112721907.

Adding to 1341231021 its reverse (1201321431), we get a palindrome (2542552452).

The spelling of 1341231021 in words is "one billion, three hundred forty-one million, two hundred thirty-one thousand, twenty-one".