401311451 has 4 divisors (see below), whose sum is σ = 408113400. Its totient is φ = 394509504.

The previous prime is 401311447. The next prime is 401311489. The reversal of 401311451 is 154113104.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 401311451 - 2² = 401311447 is a prime.

It is a super-2 number, since 2×401311451² = 322101761407450802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (401310451) 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 3 ways as a sum of consecutive naturals, for example, 3400886 + ... + 3401003.

It is an arithmetic number, because the mean of its divisors is an integer number (102028350).

Almost surely, 2^401311451 is an apocalyptic number.

401311451 is a deficient number, since it is larger than the sum of its proper divisors (6801949).

401311451 is an equidigital number, since it uses as much as digits as its factorization.

401311451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6801948.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 401311451 is about 20032.7594454683. The cubic root of 401311451 is about 737.6106591014.

Adding to 401311451 its reverse (154113104), we get a palindrome (555424555).

The spelling of 401311451 in words is "four hundred one million, three hundred eleven thousand, four hundred fifty-one".