3211140420 has 72 divisors (see below), whose sum is σ = 10076353560. Its totient is φ = 826775040.

The previous prime is 3211140419. The next prime is 3211140461. The reversal of 3211140420 is 240411123.

It can be written as a sum of positive squares in 4 ways, for example, as 5089536 + 3206050884 = 2256^2 + 56622^2 .

It is a super-2 number, since 2×3211140420² = 20622845593915552800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 3211140393 and 3211140402.

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 23 ways as a sum of consecutive naturals, for example, 302361 + ... + 312800.

It is an arithmetic number, because the mean of its divisors is an integer number (139949355).

Almost surely, 2^3211140420 is an apocalyptic number.

3211140420 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3211140420 is an abundant number, since it is smaller than the sum of its proper divisors (6865213140).

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

3211140420 is a wasteful number, since it uses less digits than its factorization.

3211140420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 615205 (or 615200 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 3211140420 is about 56666.9252739197. The cubic root of 3211140420 is about 1475.3206879091.

Adding to 3211140420 its reverse (240411123), we get a palindrome (3451551543).

The spelling of 3211140420 in words is "three billion, two hundred eleven million, one hundred forty thousand, four hundred twenty".