1531305341 has 6 divisors (see below), whose sum is σ = 1547264250. Its totient is φ = 1515509376.

The previous prime is 1531305319. The next prime is 1531305343. The reversal of 1531305341 is 1435031351.

It can be written as a sum of positive squares in 3 ways, for example, as 390892441 + 1140412900 = 19771^2 + 33770^2 .

It is not a de Polignac number, because 1531305341 - 2²⁶ = 1464196477 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1531305341.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1531305343) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 71966 + ... + 90783.

It is an arithmetic number, because the mean of its divisors is an integer number (257877375).

Almost surely, 2^1531305341 is an apocalyptic number.

It is an amenable number.

1531305341 is a deficient number, since it is larger than the sum of its proper divisors (15958909).

1531305341 is an frugal number, since it uses more digits than its factorization.

1531305341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162943 (or 162846 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 26.

The square root of 1531305341 is about 39131.8967212171. The cubic root of 1531305341 is about 1152.6229583524.

Adding to 1531305341 its reverse (1435031351), we get a palindrome (2966336692).

The spelling of 1531305341 in words is "one billion, five hundred thirty-one million, three hundred five thousand, three hundred forty-one".