401216351 has 2 divisors, whose sum is σ = 401216352. Its totient is φ = 401216350.

The previous prime is 401216317. The next prime is 401216357. The reversal of 401216351 is 153612104.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 401216351 - 2⁶ = 401216287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (401216357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200608175 + 200608176.

It is an arithmetic number, because the mean of its divisors is an integer number (200608176).

Almost surely, 2^401216351 is an apocalyptic number.

401216351 is a deficient number, since it is larger than the sum of its proper divisors (1).

401216351 is an equidigital number, since it uses as much as digits as its factorization.

401216351 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 401216351 is about 20030.3856927419. The cubic root of 401216351 is about 737.5523898817.

Adding to 401216351 its reverse (153612104), we get a palindrome (554828455).

The spelling of 401216351 in words is "four hundred one million, two hundred sixteen thousand, three hundred fifty-one".