315306142 has 4 divisors (see below), whose sum is σ = 472959216. Its totient is φ = 157653070.

The previous prime is 315306139. The next prime is 315306203. The reversal of 315306142 is 241603513.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78826534 + ... + 78826537.

It is an arithmetic number, because the mean of its divisors is an integer number (118239804).

Almost surely, 2^315306142 is an apocalyptic number.

315306142 is a deficient number, since it is larger than the sum of its proper divisors (157653074).

315306142 is a wasteful number, since it uses less digits than its factorization.

315306142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157653073.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 315306142 is about 17756.8618286002. The cubic root of 315306142 is about 680.6295654491.

Adding to 315306142 its reverse (241603513), we get a palindrome (556909655).

The spelling of 315306142 in words is "three hundred fifteen million, three hundred six thousand, one hundred forty-two".