401355231100 has 18 divisors (see below), whose sum is σ = 870940851704. Its totient is φ = 160542092400.

The previous prime is 401355231083. The next prime is 401355231157. The reversal of 401355231100 is 1132553104.

It is a happy number.

It is a super-2 number, since 2×401355231100² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2006776056 + ... + 2006776255.

Almost surely, 2^401355231100 is an apocalyptic number.

It is an amenable number.

401355231100 is an abundant number, since it is smaller than the sum of its proper divisors (469585620604).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

401355231100 is a wasteful number, since it uses less digits than its factorization.

401355231100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4013552325 (or 4013552318 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

Adding to 401355231100 its reverse (1132553104), we get a palindrome (402487784204).

The spelling of 401355231100 in words is "four hundred one billion, three hundred fifty-five million, two hundred thirty-one thousand, one hundred".