4011431220 has 72 divisors (see below), whose sum is σ = 12496893864. Its totient is φ = 1040802048.

The previous prime is 4011431213. The next prime is 4011431239. The reversal of 4011431220 is 221341104.

4011431220 is a `hidden beast` number, since 4 + 0 + 11 + 431 + 220 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 140849424 + 3870581796 = 11868^2 + 62214^2 .

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 = 4011431193 and 4011431202.

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 23 ways as a sum of consecutive naturals, for example, 294499 + ... + 307818.

Almost surely, 2^4011431220 is an apocalyptic number.

It is an amenable number.

4011431220 is an abundant number, since it is smaller than the sum of its proper divisors (8485462644).

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

4011431220 is a wasteful number, since it uses less digits than its factorization.

4011431220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 602369 (or 602364 counting only the distinct ones).

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

The square root of 4011431220 is about 63335.8604583533. The cubic root of 4011431220 is about 1588.9117746517.

Adding to 4011431220 its reverse (221341104), we get a palindrome (4232772324).

The spelling of 4011431220 in words is "four billion, eleven million, four hundred thirty-one thousand, two hundred twenty".