311100042 has 32 divisors (see below), whose sum is σ = 681441984. Its totient is φ = 93900800.

The previous prime is 311100029. The next prime is 311100043. The reversal of 311100042 is 240001113.

It is a happy number.

It is a super-2 number, since 2×311100042² = 193566472264803528, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (311100043) 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, 7792 + ... + 26132.

It is an arithmetic number, because the mean of its divisors is an integer number (21295062).

Almost surely, 2^311100042 is an apocalyptic number.

311100042 is an abundant number, since it is smaller than the sum of its proper divisors (370341942).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

311100042 is a wasteful number, since it uses less digits than its factorization.

311100042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18614.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 311100042 is about 17638.0282911668. The cubic root of 311100042 is about 677.5895349687.

Adding to 311100042 its reverse (240001113), we get a palindrome (551101155).

The spelling of 311100042 in words is "three hundred eleven million, one hundred thousand, forty-two".