401552313231 has 8 divisors (see below), whose sum is σ = 535417973680. Its totient is φ = 267694097472.

The previous prime is 401552313223. The next prime is 401552313269. The reversal of 401552313231 is 132313255104.

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

It is not a de Polignac number, because 401552313231 - 2³ = 401552313223 is a prime.

It is a super-2 number, since 2×401552313231² (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 (401552313931) 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, 1734076 + ... + 1951953.

It is an arithmetic number, because the mean of its divisors is an integer number (66927246710).

Almost surely, 2^401552313231 is an apocalyptic number.

401552313231 is a deficient number, since it is larger than the sum of its proper divisors (133865660449).

401552313231 is a wasteful number, since it uses less digits than its factorization.

401552313231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3722345.

The product of its (nonzero) digits is 10800, while the sum is 30.

Adding to 401552313231 its reverse (132313255104), we get a palindrome (533865568335).

The spelling of 401552313231 in words is "four hundred one billion, five hundred fifty-two million, three hundred thirteen thousand, two hundred thirty-one".