4121205431 has 16 divisors (see below), whose sum is σ = 5013561600. Its totient is φ = 3308931648.

The previous prime is 4121205427. The next prime is 4121205461. The reversal of 4121205431 is 1345021214.

It is a cyclic number.

It is not a de Polignac number, because 4121205431 - 2² = 4121205427 is a prime.

It is a super-2 number, since 2×4121205431² = 33968668409007791522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4121205397 and 4121205406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4121205461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 162245 + ... + 185918.

It is an arithmetic number, because the mean of its divisors is an integer number (313347600).

Almost surely, 2^4121205431 is an apocalyptic number.

4121205431 is a deficient number, since it is larger than the sum of its proper divisors (892356169).

4121205431 is a wasteful number, since it uses less digits than its factorization.

4121205431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348278.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 4121205431 is about 64196.6154170140. The cubic root of 4121205431 is about 1603.2752480555.

Adding to 4121205431 its reverse (1345021214), we get a palindrome (5466226645).

The spelling of 4121205431 in words is "four billion, one hundred twenty-one million, two hundred five thousand, four hundred thirty-one".