20110100340 has 48 divisors (see below), whose sum is σ = 61427217600. Its totient is φ = 4875175680.

The previous prime is 20110100333. The next prime is 20110100357. The reversal of 20110100340 is 4300101102.

It is a happy number.

It is a super-2 number, since 2×20110100340² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15234265 + ... + 15235584.

It is an arithmetic number, because the mean of its divisors is an integer number (1279733700).

Almost surely, 2^20110100340 is an apocalyptic number.

20110100340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20110100340 is an abundant number, since it is smaller than the sum of its proper divisors (41317117260).

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

20110100340 is a wasteful number, since it uses less digits than its factorization.

20110100340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30469872 (or 30469870 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 20110100340 its reverse (4300101102), we get a palindrome (24410201442).

The spelling of 20110100340 in words is "twenty billion, one hundred ten million, one hundred thousand, three hundred forty".