311242400430 has 64 divisors (see below), whose sum is σ = 846780963840. Its totient is φ = 72581222016.

The previous prime is 311242400317. The next prime is 311242400473. The reversal of 311242400430 is 34004242113.

It is a self number, because there is not a number n which added to its sum of digits gives 311242400430.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20994102 + ... + 21008921.

It is an arithmetic number, because the mean of its divisors is an integer number (13230952560).

Almost surely, 2^311242400430 is an apocalyptic number.

311242400430 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

311242400430 is an abundant number, since it is smaller than the sum of its proper divisors (535538563410).

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

311242400430 is a wasteful number, since it uses less digits than its factorization.

311242400430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42003065.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 311242400430 its reverse (34004242113), we get a palindrome (345246642543).

The spelling of 311242400430 in words is "three hundred eleven billion, two hundred forty-two million, four hundred thousand, four hundred thirty".