401213023 has 2 divisors, whose sum is σ = 401213024. Its totient is φ = 401213022.

The previous prime is 401212993. The next prime is 401213027. The reversal of 401213023 is 320312104.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-401213023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 401212988 and 401213006.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (401213027) by changing a digit.

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 as a sum of consecutive naturals, namely, 200606511 + 200606512.

It is an arithmetic number, because the mean of its divisors is an integer number (200606512).

Almost surely, 2^401213023 is an apocalyptic number.

401213023 is a deficient number, since it is larger than the sum of its proper divisors (1).

401213023 is an equidigital number, since it uses as much as digits as its factorization.

401213023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 401213023 is about 20030.3026187824. The cubic root of 401213023 is about 737.5503505986.

Adding to 401213023 its reverse (320312104), we get a palindrome (721525127).

The spelling of 401213023 in words is "four hundred one million, two hundred thirteen thousand, twenty-three".