2101031420 has 12 divisors (see below), whose sum is σ = 4412166024. Its totient is φ = 840412560.

The previous prime is 2101031407. The next prime is 2101031423. The reversal of 2101031420 is 241301012.

It is a junction number, because it is equal to n+sod(n) for n = 2101031395 and 2101031404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101031423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52525766 + ... + 52525805.

It is an arithmetic number, because the mean of its divisors is an integer number (367680502).

Almost surely, 2^2101031420 is an apocalyptic number.

2101031420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2101031420 is an abundant number, since it is smaller than the sum of its proper divisors (2311134604).

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

2101031420 is a wasteful number, since it uses less digits than its factorization.

2101031420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105051580 (or 105051578 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 2101031420 is about 45837.0092828928. The cubic root of 2101031420 is about 1280.7887838416.

Adding to 2101031420 its reverse (241301012), we get a palindrome (2342332432).

The spelling of 2101031420 in words is "two billion, one hundred one million, thirty-one thousand, four hundred twenty".