401031345391 has 8 divisors (see below), whose sum is σ = 401215798368. Its totient is φ = 400846944000.

The previous prime is 401031345389. The next prime is 401031345401. The reversal of 401031345391 is 193543130104.

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 401031345391 - 2¹ = 401031345389 is a prime.

It is a super-2 number, since 2×401031345391² (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 (401031345301) 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, 25631931 + ... + 25647571.

It is an arithmetic number, because the mean of its divisors is an integer number (50151974796).

Almost surely, 2^401031345391 is an apocalyptic number.

401031345391 is a deficient number, since it is larger than the sum of its proper divisors (184452977).

401031345391 is a wasteful number, since it uses less digits than its factorization.

401031345391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25793.

The product of its (nonzero) digits is 19440, while the sum is 34.

Adding to 401031345391 its reverse (193543130104), we get a palindrome (594574475495).

The spelling of 401031345391 in words is "four hundred one billion, thirty-one million, three hundred forty-five thousand, three hundred ninety-one".