1343403761 has 4 divisors (see below), whose sum is σ = 1535318592. Its totient is φ = 1151488932.

The previous prime is 1343403751. The next prime is 1343403799. The reversal of 1343403761 is 1673043431.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1673043431 = 10427 ⋅160453.

It is a cyclic number.

It is not a de Polignac number, because 1343403761 - 2¹⁰ = 1343402737 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1343403701) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95957405 + ... + 95957418.

It is an arithmetic number, because the mean of its divisors is an integer number (383829648).

Almost surely, 2^1343403761 is an apocalyptic number.

It is an amenable number.

1343403761 is a deficient number, since it is larger than the sum of its proper divisors (191914831).

1343403761 is an equidigital number, since it uses as much as digits as its factorization.

1343403761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191914830.

The product of its (nonzero) digits is 18144, while the sum is 32.

The square root of 1343403761 is about 36652.4727815191. The cubic root of 1343403761 is about 1103.4064541332.

The spelling of 1343403761 in words is "one billion, three hundred forty-three million, four hundred three thousand, seven hundred sixty-one".