412031021 has 2 divisors, whose sum is σ = 412031022. Its totient is φ = 412031020.

The previous prime is 412030991. The next prime is 412031029. The reversal of 412031021 is 120130214.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 411684100 + 346921 = 20290^2 + 589^2 .

It is a cyclic number.

It is not a de Polignac number, because 412031021 - 2²⁶ = 344922157 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 412030987 and 412031005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (412031029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 206015510 + 206015511.

It is an arithmetic number, because the mean of its divisors is an integer number (206015511).

Almost surely, 2^412031021 is an apocalyptic number.

It is an amenable number.

412031021 is a deficient number, since it is larger than the sum of its proper divisors (1).

412031021 is an equidigital number, since it uses as much as digits as its factorization.

412031021 is an odious number, because the sum of its binary digits is odd.

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

The square root of 412031021 is about 20298.5472632896. The cubic root of 412031021 is about 744.1205609971.

Adding to 412031021 its reverse (120130214), we get a palindrome (532161235).

It can be divided in two parts, 41203 and 1021, that added together give a palindrome (42224).

The spelling of 412031021 in words is "four hundred twelve million, thirty-one thousand, twenty-one".