1313043451 has 4 divisors (see below), whose sum is σ = 1317238792. Its totient is φ = 1308848112.

The previous prime is 1313043439. The next prime is 1313043497. The reversal of 1313043451 is 1543403131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1313043451 - 2¹¹ = 1313041403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1313043551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2097201 + ... + 2097826.

It is an arithmetic number, because the mean of its divisors is an integer number (329309698).

Almost surely, 2^1313043451 is an apocalyptic number.

1313043451 is a deficient number, since it is larger than the sum of its proper divisors (4195341).

1313043451 is an equidigital number, since it uses as much as digits as its factorization.

1313043451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4195340.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 1313043451 is about 36235.9414256067. The cubic root of 1313043451 is about 1095.0308786633.

Adding to 1313043451 its reverse (1543403131), we get a palindrome (2856446582).

The spelling of 1313043451 in words is "one billion, three hundred thirteen million, forty-three thousand, four hundred fifty-one".