311042252 has 6 divisors (see below), whose sum is σ = 544323948. Its totient is φ = 155521124.

The previous prime is 311042243. The next prime is 311042309. The reversal of 311042252 is 252240113.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38880278 + ... + 38880285.

It is an arithmetic number, because the mean of its divisors is an integer number (90720658).

Almost surely, 2^311042252 is an apocalyptic number.

It is an amenable number.

311042252 is a deficient number, since it is larger than the sum of its proper divisors (233281696).

311042252 is a wasteful number, since it uses less digits than its factorization.

311042252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77760567 (or 77760565 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 311042252 is about 17636.3899934199. The cubic root of 311042252 is about 677.5475759857.

Adding to 311042252 its reverse (252240113), we get a palindrome (563282365).

The spelling of 311042252 in words is "three hundred eleven million, forty-two thousand, two hundred fifty-two".