1541520131 has 2 divisors, whose sum is σ = 1541520132. Its totient is φ = 1541520130.

The previous prime is 1541520119. The next prime is 1541520151. The reversal of 1541520131 is 1310251451.

It is a weak prime.

It is an emirp because it is prime and its reverse (1310251451) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1541520131 is a prime.

It is a super-2 number, since 2×1541520131² = 4752568628556514322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1541520097 and 1541520106.

It is not a weakly prime, because it can be changed into another prime (1541520151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 770760065 + 770760066.

It is an arithmetic number, because the mean of its divisors is an integer number (770760066).

Almost surely, 2^1541520131 is an apocalyptic number.

1541520131 is a deficient number, since it is larger than the sum of its proper divisors (1).

1541520131 is an equidigital number, since it uses as much as digits as its factorization.

1541520131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 600, while the sum is 23.

The square root of 1541520131 is about 39262.1972258303. The cubic root of 1541520131 is about 1155.1801923972.

Adding to 1541520131 its reverse (1310251451), we get a palindrome (2851771582).

The spelling of 1541520131 in words is "one billion, five hundred forty-one million, five hundred twenty thousand, one hundred thirty-one".