316215142 has 4 divisors (see below), whose sum is σ = 474322716. Its totient is φ = 158107570.

The previous prime is 316215121. The next prime is 316215169. The reversal of 316215142 is 241512613.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 241512613 = 1733 ⋅139361.

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, 79053784 + ... + 79053787.

It is an arithmetic number, because the mean of its divisors is an integer number (118580679).

Almost surely, 2^316215142 is an apocalyptic number.

316215142 is a deficient number, since it is larger than the sum of its proper divisors (158107574).

316215142 is a wasteful number, since it uses less digits than its factorization.

316215142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158107573.

The product of its digits is 1440, while the sum is 25.

The square root of 316215142 is about 17782.4391465288. The cubic root of 316215142 is about 681.2830030641.

Adding to 316215142 its reverse (241512613), we get a palindrome (557727755).

It can be divided in two parts, 31621 and 5142, that added together give a palindrome (36763).

The spelling of 316215142 in words is "three hundred sixteen million, two hundred fifteen thousand, one hundred forty-two".