401121431 has 8 divisors (see below), whose sum is σ = 414632064. Its totient is φ = 387646560.

The previous prime is 401121419. The next prime is 401121451. The reversal of 401121431 is 134121104.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 401121431 - 2⁶ = 401121367 is a prime.

It is a super-2 number, since 2×401121431² = 321796804814975522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401121451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14921 + ... + 32013.

It is an arithmetic number, because the mean of its divisors is an integer number (51829008).

Almost surely, 2^401121431 is an apocalyptic number.

401121431 is a deficient number, since it is larger than the sum of its proper divisors (13510633).

401121431 is a wasteful number, since it uses less digits than its factorization.

401121431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17881.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 401121431 is about 20028.0161523801. The cubic root of 401121431 is about 737.4942217684.

Adding to 401121431 its reverse (134121104), we get a palindrome (535242535).

The spelling of 401121431 in words is "four hundred one million, one hundred twenty-one thousand, four hundred thirty-one".