2311012202240 has 144 divisors (see below), whose sum is σ = 6329316575232. Its totient is φ = 791981248512.

The previous prime is 2311012202171. The next prime is 2311012202309. The reversal of 2311012202240 is 422022101132.

It is an interprime number because it is at equal distance from previous prime (2311012202171) and next prime (2311012202309).

It is a super-2 number, since 2×2311012202240² (a number of 26 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19716287 + ... + 19833153.

It is an arithmetic number, because the mean of its divisors is an integer number (43953587328).

Almost surely, 2^{2311012202240} is an apocalyptic number.

2311012202240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2311012202240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3164658287616).

2311012202240 is an abundant number, since it is smaller than the sum of its proper divisors (4018304372992).

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

2311012202240 is a wasteful number, since it uses less digits than its factorization.

2311012202240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119102 (or 119088 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 2311012202240 its reverse (422022101132), we get a palindrome (2733034303372).

The spelling of 2311012202240 in words is "two trillion, three hundred eleven billion, twelve million, two hundred two thousand, two hundred forty".