401402431100 has 144 divisors (see below), whose sum is σ = 954868884480. Its totient is φ = 145253875200.

The previous prime is 401402431069. The next prime is 401402431139. The reversal of 401402431100 is 1134204104.

It is a super-2 number, since 2×401402431100² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 240792467 + ... + 240794133.

It is an arithmetic number, because the mean of its divisors is an integer number (6631033920).

Almost surely, 2^401402431100 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 401402431100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (477434442240).

401402431100 is an abundant number, since it is smaller than the sum of its proper divisors (553466453380).

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

401402431100 is a wasteful number, since it uses less digits than its factorization.

401402431100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2628 (or 2621 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 401402431100 its reverse (1134204104), we get a palindrome (402536635204).

The spelling of 401402431100 in words is "four hundred one billion, four hundred two million, four hundred thirty-one thousand, one hundred".