401931234 has 64 divisors (see below), whose sum is σ = 925668480. Its totient is φ = 130800096.

The previous prime is 401931163. The next prime is 401931239. The reversal of 401931234 is 432139104.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 401931198 and 401931207.

It is not an unprimeable number, because it can be changed into a prime (401931239) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 187014 + ... + 189150.

It is an arithmetic number, because the mean of its divisors is an integer number (14463570).

Almost surely, 2^401931234 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 401931234, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (462834240).

401931234 is an abundant number, since it is smaller than the sum of its proper divisors (523737246).

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

401931234 is an equidigital number, since it uses as much as digits as its factorization.

401931234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2203 (or 2185 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 401931234 is about 20048.2227142458. Note that the first 3 decimals coincide. The cubic root of 401931234 is about 737.9901842835.

It can be divided in two parts, 4019 and 31234, that added together give a palindrome (35253).

The spelling of 401931234 in words is "four hundred one million, nine hundred thirty-one thousand, two hundred thirty-four".