401443431 has 8 divisors (see below), whose sum is σ = 543247104. Its totient is φ = 263634360.

The previous prime is 401443429. The next prime is 401443439. The reversal of 401443431 is 134344104.

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

It is not a de Polignac number, because 401443431 - 2¹ = 401443429 is a prime.

It is a super-2 number, since 2×401443431² = 322313656586103522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401443439) 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, 998415 + ... + 998816.

It is an arithmetic number, because the mean of its divisors is an integer number (67905888).

Almost surely, 2^401443431 is an apocalyptic number.

401443431 is a deficient number, since it is larger than the sum of its proper divisors (141803673).

401443431 is a wasteful number, since it uses less digits than its factorization.

401443431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1997301.

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 401443431 is about 20036.0532790268. The cubic root of 401443431 is about 737.6915100088.

Adding to 401443431 its reverse (134344104), we get a palindrome (535787535).

The spelling of 401443431 in words is "four hundred one million, four hundred forty-three thousand, four hundred thirty-one".