1343312505 has 24 divisors (see below), whose sum is σ = 2414647872. Its totient is φ = 716432688.

The previous prime is 1343312501. The next prime is 1343312573. The reversal of 1343312505 is 5052133431.

1343312505 is a `hidden beast` number, since 1 + 343 + 312 + 5 + 0 + 5 = 666.

It is not a de Polignac number, because 1343312505 - 2² = 1343312501 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1343312501) 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, 551589 + ... + 554018.

It is an arithmetic number, because the mean of its divisors is an integer number (100610328).

Almost surely, 2^1343312505 is an apocalyptic number.

1343312505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1343312505 is a deficient number, since it is larger than the sum of its proper divisors (1071335367).

1343312505 is an equidigital number, since it uses as much as digits as its factorization.

1343312505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1105627 (or 1105615 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

The square root of 1343312505 is about 36651.2278784763. The cubic root of 1343312505 is about 1103.3814691554.

Adding to 1343312505 its reverse (5052133431), we get a palindrome (6395445936).

The spelling of 1343312505 in words is "one billion, three hundred forty-three million, three hundred twelve thousand, five hundred five".