401211023431 has 8 divisors (see below), whose sum is σ = 414378353664. Its totient is φ = 388218095160.

The previous prime is 401211023417. The next prime is 401211023527. The reversal of 401211023431 is 134320112104.

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 401211023431 - 2¹¹ = 401211021383 is a prime.

It is a super-2 number, since 2×401211023431² (a number of 24 digits) 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 (401211083431) 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 in 7 ways as a sum of consecutive naturals, for example, 43595815 + ... + 43605016.

It is an arithmetic number, because the mean of its divisors is an integer number (51797294208).

Almost surely, 2^401211023431 is an apocalyptic number.

401211023431 is a deficient number, since it is larger than the sum of its proper divisors (13167330233).

401211023431 is a wasteful number, since it uses less digits than its factorization.

401211023431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87200981.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 401211023431 its reverse (134320112104), we get a palindrome (535531135535).

The spelling of 401211023431 in words is "four hundred one billion, two hundred eleven million, twenty-three thousand, four hundred thirty-one".