311242243000 has 64 divisors (see below), whose sum is σ = 784330485120. Its totient is φ = 114920208000.

The previous prime is 311242242991. The next prime is 311242243007. The reversal of 311242243000 is 342242113.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311242243007) 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, 11957856 + ... + 11983855.

It is an arithmetic number, because the mean of its divisors is an integer number (12255163830).

Almost surely, 2^311242243000 is an apocalyptic number.

It is an amenable number.

311242243000 is an abundant number, since it is smaller than the sum of its proper divisors (473088242120).

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

311242243000 is a wasteful number, since it uses less digits than its factorization.

311242243000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23941745 (or 23941731 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 311242243000 its reverse (342242113), we get a palindrome (311584485113).

The spelling of 311242243000 in words is "three hundred eleven billion, two hundred forty-two million, two hundred forty-three thousand".