1312459451 has 4 divisors (see below), whose sum is σ = 1312550400. Its totient is φ = 1312368504.

The previous prime is 1312459439. The next prime is 1312459553. The reversal of 1312459451 is 1549542131.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1312459451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1312459151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18491 + ... + 54468.

It is an arithmetic number, because the mean of its divisors is an integer number (328137600).

Almost surely, 2^1312459451 is an apocalyptic number.

1312459451 is a deficient number, since it is larger than the sum of its proper divisors (90949).

1312459451 is an equidigital number, since it uses as much as digits as its factorization.

1312459451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90948.

The product of its digits is 21600, while the sum is 35.

The square root of 1312459451 is about 36227.8822317839. The cubic root of 1312459451 is about 1094.8685096100.

The spelling of 1312459451 in words is "one billion, three hundred twelve million, four hundred fifty-nine thousand, four hundred fifty-one".