315540143 has 2 divisors, whose sum is σ = 315540144. Its totient is φ = 315540142.

The previous prime is 315540119. The next prime is 315540157. The reversal of 315540143 is 341045513.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 315540143 - 2⁶ = 315540079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (315540193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157770071 + 157770072.

It is an arithmetic number, because the mean of its divisors is an integer number (157770072).

Almost surely, 2^315540143 is an apocalyptic number.

315540143 is a deficient number, since it is larger than the sum of its proper divisors (1).

315540143 is an equidigital number, since it uses as much as digits as its factorization.

315540143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 315540143 is about 17763.4496368245. The cubic root of 315540143 is about 680.7978977399.

Adding to 315540143 its reverse (341045513), we get a palindrome (656585656).

The spelling of 315540143 in words is "three hundred fifteen million, five hundred forty thousand, one hundred forty-three".