1343521143 has 24 divisors (see below), whose sum is σ = 1980201600. Its totient is φ = 877579920.

The previous prime is 1343521139. The next prime is 1343521147. The reversal of 1343521143 is 3411253431.

It is a happy number.

1343521143 is a `hidden beast` number, since 13 + 435 + 211 + 4 + 3 = 666.

It is an interprime number because it is at equal distance from previous prime (1343521139) and next prime (1343521147).

It is not a de Polignac number, because 1343521143 - 2² = 1343521139 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1343521147) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 97708 + ... + 110606.

It is an arithmetic number, because the mean of its divisors is an integer number (82508400).

Almost surely, 2^1343521143 is an apocalyptic number.

1343521143 is a deficient number, since it is larger than the sum of its proper divisors (636680457).

1343521143 is a wasteful number, since it uses less digits than its factorization.

1343521143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13139 (or 13136 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 1343521143 is about 36654.0740300447. The cubic root of 1343521143 is about 1103.4385904842.

Adding to 1343521143 its reverse (3411253431), we get a palindrome (4754774574).

The spelling of 1343521143 in words is "one billion, three hundred forty-three million, five hundred twenty-one thousand, one hundred forty-three".