1315451461 has 4 divisors (see below), whose sum is σ = 1316296800. Its totient is φ = 1314606124.

The previous prime is 1315451411. The next prime is 1315451471. The reversal of 1315451461 is 1641545131.

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: 1641545131 = 35099 ⋅46769.

It is a cyclic number.

It is not a de Polignac number, because 1315451461 - 2¹⁵ = 1315418693 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1315451411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 420331 + ... + 423448.

It is an arithmetic number, because the mean of its divisors is an integer number (329074200).

Almost surely, 2^1315451461 is an apocalyptic number.

It is an amenable number.

1315451461 is a deficient number, since it is larger than the sum of its proper divisors (845339).

1315451461 is an equidigital number, since it uses as much as digits as its factorization.

1315451461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 845338.

The product of its digits is 7200, while the sum is 31.

The square root of 1315451461 is about 36269.1530229202. The cubic root of 1315451461 is about 1095.6998677024.

Adding to 1315451461 its reverse (1641545131), we get a palindrome (2956996592).

The spelling of 1315451461 in words is "one billion, three hundred fifteen million, four hundred fifty-one thousand, four hundred sixty-one".