1325131317 has 24 divisors (see below), whose sum is σ = 2028153816. Its totient is φ = 830846976.

The previous prime is 1325131309. The next prime is 1325131319. The reversal of 1325131317 is 7131315231.

It is a happy number.

1325131317 is a `hidden beast` number, since 13 + 2 + 513 + 131 + 7 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 16573041 + 1308558276 = 4071^2 + 36174^2 .

It is not a de Polignac number, because 1325131317 - 2³ = 1325131309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1325131319) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 303373 + ... + 307709.

It is an arithmetic number, because the mean of its divisors is an integer number (84506409).

Almost surely, 2^1325131317 is an apocalyptic number.

1325131317 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1325131317 is a deficient number, since it is larger than the sum of its proper divisors (703022499).

1325131317 is a wasteful number, since it uses less digits than its factorization.

1325131317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6357 (or 6354 counting only the distinct ones).

The product of its digits is 1890, while the sum is 27.

The square root of 1325131317 is about 36402.3531794306. The cubic root of 1325131317 is about 1098.3809009241.

Adding to 1325131317 its reverse (7131315231), we get a palindrome (8456446548).

The spelling of 1325131317 in words is "one billion, three hundred twenty-five million, one hundred thirty-one thousand, three hundred seventeen".