20310211240 has 32 divisors (see below), whose sum is σ = 49852337760. Its totient is φ = 7385531200.

The previous prime is 20310211231. The next prime is 20310211241. The reversal of 20310211240 is 4211201302.

It is a super-2 number, since 2×20310211240² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20310211241) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 23079346 + ... + 23080225.

It is an arithmetic number, because the mean of its divisors is an integer number (1557885555).

Almost surely, 2^20310211240 is an apocalyptic number.

20310211240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20310211240 is an abundant number, since it is smaller than the sum of its proper divisors (29542126520).

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

20310211240 is a wasteful number, since it uses less digits than its factorization.

20310211240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46159593 (or 46159589 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 20310211240 its reverse (4211201302), we get a palindrome (24521412542).

The spelling of 20310211240 in words is "twenty billion, three hundred ten million, two hundred eleven thousand, two hundred forty".