311315642 has 16 divisors (see below), whose sum is σ = 510881472. Its totient is φ = 141102720.

The previous prime is 311315629. The next prime is 311315647. The reversal of 311315642 is 246513113.

It is not an unprimeable number, because it can be changed into a prime (311315647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12278 + ... + 27809.

It is an arithmetic number, because the mean of its divisors is an integer number (31930092).

Almost surely, 2^311315642 is an apocalyptic number.

311315642 is a deficient number, since it is larger than the sum of its proper divisors (199565830).

311315642 is a wasteful number, since it uses less digits than its factorization.

311315642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40453.

The product of its digits is 2160, while the sum is 26.

The square root of 311315642 is about 17644.1390268837. The cubic root of 311315642 is about 677.7460275750.

Adding to 311315642 its reverse (246513113), we get a palindrome (557828755).

The spelling of 311315642 in words is "three hundred eleven million, three hundred fifteen thousand, six hundred forty-two".