311310142 has 32 divisors (see below), whose sum is σ = 549853920. Its totient is φ = 130321920.

The previous prime is 311310127. The next prime is 311310149. The reversal of 311310142 is 241013113.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311310149) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 161778 + ... + 163690.

It is an arithmetic number, because the mean of its divisors is an integer number (17182935).

Almost surely, 2^311310142 is an apocalyptic number.

311310142 is a deficient number, since it is larger than the sum of its proper divisors (238543778).

311310142 is a wasteful number, since it uses less digits than its factorization.

311310142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2508.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 311310142 is about 17643.9831670743. The cubic root of 311310142 is about 677.7420363149.

Adding to 311310142 its reverse (241013113), we get a palindrome (552323255).

The spelling of 311310142 in words is "three hundred eleven million, three hundred ten thousand, one hundred forty-two".