1340325451 has 4 divisors (see below), whose sum is σ = 1386543600. Its totient is φ = 1294107304.

The previous prime is 1340325443. The next prime is 1340325457. The reversal of 1340325451 is 1545230431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1545230431 = 28669 ⋅53899.

It is a cyclic number.

It is not a de Polignac number, because 1340325451 - 2³ = 1340325443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1340325457) 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, 23109031 + ... + 23109088.

It is an arithmetic number, because the mean of its divisors is an integer number (346635900).

Almost surely, 2^1340325451 is an apocalyptic number.

1340325451 is a deficient number, since it is larger than the sum of its proper divisors (46218149).

1340325451 is an equidigital number, since it uses as much as digits as its factorization.

1340325451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46218148.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 1340325451 is about 36610.4554874697. The cubic root of 1340325451 is about 1102.5630182526.

Adding to 1340325451 its reverse (1545230431), we get a palindrome (2885555882).

The spelling of 1340325451 in words is "one billion, three hundred forty million, three hundred twenty-five thousand, four hundred fifty-one".