1343521311 has 16 divisors (see below), whose sum is σ = 1955429760. Its totient is φ = 813748320.

The previous prime is 1343521303. The next prime is 1343521351. The reversal of 1343521311 is 1131253431.

It is not a de Polignac number, because 1343521311 - 2³ = 1343521303 is a prime.

It is a super-2 number, since 2×1343521311² = 3610099026222317442, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1343521301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45045 + ... + 68673.

It is an arithmetic number, because the mean of its divisors is an integer number (122214360).

Almost surely, 2^1343521311 is an apocalyptic number.

1343521311 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1343521311 is a deficient number, since it is larger than the sum of its proper divisors (611908449).

1343521311 is a wasteful number, since it uses less digits than its factorization.

1343521311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25366.

The product of its digits is 1080, while the sum is 24.

The square root of 1343521311 is about 36654.0763217408. The cubic root of 1343521311 is about 1103.4386364772.

Adding to 1343521311 its reverse (1131253431), we get a palindrome (2474774742).

The spelling of 1343521311 in words is "one billion, three hundred forty-three million, five hundred twenty-one thousand, three hundred eleven".