12315142501 has 2 divisors, whose sum is σ = 12315142502. Its totient is φ = 12315142500.

The previous prime is 12315142459. The next prime is 12315142549. The reversal of 12315142501 is 10524151321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11865744900 + 449397601 = 108930^2 + 21199^2 .

It is a cyclic number.

It is not a de Polignac number, because 12315142501 - 2¹³ = 12315134309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12315142591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6157571250 + 6157571251.

It is an arithmetic number, because the mean of its divisors is an integer number (6157571251).

Almost surely, 2^12315142501 is an apocalyptic number.

It is an amenable number.

12315142501 is a deficient number, since it is larger than the sum of its proper divisors (1).

12315142501 is an equidigital number, since it uses as much as digits as its factorization.

12315142501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1200, while the sum is 25.

Adding to 12315142501 its reverse (10524151321), we get a palindrome (22839293822).

The spelling of 12315142501 in words is "twelve billion, three hundred fifteen million, one hundred forty-two thousand, five hundred one".