401011431321 has 4 divisors (see below), whose sum is σ = 534681908432. Its totient is φ = 267340954212.

The previous prime is 401011431263. The next prime is 401011431383. The reversal of 401011431321 is 123134110104.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 401011431321 - 2¹⁵ = 401011398553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (401011471321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66835238551 + ... + 66835238556.

It is an arithmetic number, because the mean of its divisors is an integer number (133670477108).

Almost surely, 2^401011431321 is an apocalyptic number.

It is an amenable number.

401011431321 is a deficient number, since it is larger than the sum of its proper divisors (133670477111).

401011431321 is a wasteful number, since it uses less digits than its factorization.

401011431321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133670477110.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 401011431321 its reverse (123134110104), we get a palindrome (524145541425).

The spelling of 401011431321 in words is "four hundred one billion, eleven million, four hundred thirty-one thousand, three hundred twenty-one".