1343405531 has 8 divisors (see below), whose sum is σ = 1447284384. Its totient is φ = 1239603840.

The previous prime is 1343405471. The next prime is 1343405579. The reversal of 1343405531 is 1355043431.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1343405531 is a prime.

It is a super-2 number, since 2×1343405531² = 3609476841442783922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1343405494 and 1343405503.

It is not an unprimeable number, because it can be changed into a prime (1343408531) 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, 19826 + ... + 55496.

It is an arithmetic number, because the mean of its divisors is an integer number (180910548).

Almost surely, 2^1343405531 is an apocalyptic number.

1343405531 is a deficient number, since it is larger than the sum of its proper divisors (103878853).

1343405531 is a wasteful number, since it uses less digits than its factorization.

1343405531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38581.

The product of its (nonzero) digits is 10800, while the sum is 29.

The square root of 1343405531 is about 36652.4969272218. The cubic root of 1343405531 is about 1103.4069387303.

Adding to 1343405531 its reverse (1355043431), we get a palindrome (2698448962).

Subtracting 1343405531 from its reverse (1355043431), we obtain a triangular number (11637900 = T₄₈₂₄).

The spelling of 1343405531 in words is "one billion, three hundred forty-three million, four hundred five thousand, five hundred thirty-one".