1325313481 has 4 divisors (see below), whose sum is σ = 1327497472. Its totient is φ = 1323129492.

The previous prime is 1325313469. The next prime is 1325313487. The reversal of 1325313481 is 1843135231.

It is a happy number.

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: 1843135231 = 7 ⋅263305033.

It is a cyclic number.

It is not a de Polignac number, because 1325313481 - 2¹¹ = 1325311433 is a prime.

It is a super-2 number, since 2×1325313481² = 3512911645840674722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1325313487) 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, 1091085 + ... + 1092298.

It is an arithmetic number, because the mean of its divisors is an integer number (331874368).

Almost surely, 2^1325313481 is an apocalyptic number.

It is an amenable number.

1325313481 is a deficient number, since it is larger than the sum of its proper divisors (2183991).

1325313481 is an equidigital number, since it uses as much as digits as its factorization.

1325313481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2183990.

The product of its digits is 8640, while the sum is 31.

The square root of 1325313481 is about 36404.8551844393. The cubic root of 1325313481 is about 1098.4312295942.

The spelling of 1325313481 in words is "one billion, three hundred twenty-five million, three hundred thirteen thousand, four hundred eighty-one".