311040030 has 32 divisors (see below), whose sum is σ = 853138944. Its totient is φ = 71094816.

The previous prime is 311040029. The next prime is 311040073. The reversal of 311040030 is 30040113.

It is a junction number, because it is equal to n+sod(n) for n = 311039988 and 311040015.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 740362 + ... + 740781.

It is an arithmetic number, because the mean of its divisors is an integer number (26660592).

Almost surely, 2^311040030 is an apocalyptic number.

311040030 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

311040030 is an abundant number, since it is smaller than the sum of its proper divisors (542098914).

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

311040030 is a wasteful number, since it uses less digits than its factorization.

311040030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1481160.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 311040030 is about 17636.3269985561. The cubic root of 311040030 is about 677.5459625776.

Adding to 311040030 its reverse (30040113), we get a palindrome (341080143).

The spelling of 311040030 in words is "three hundred eleven million, forty thousand, thirty".