403231211340 has 96 divisors (see below), whose sum is σ = 1197749306880. Its totient is φ = 101009488896.

The previous prime is 403231211321. The next prime is 403231211351. The reversal of 403231211340 is 43112132304.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 403231211340.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 155521 + ... + 911399.

It is an arithmetic number, because the mean of its divisors is an integer number (12476555280).

Almost surely, 2^403231211340 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 403231211340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (598874653440).

403231211340 is an abundant number, since it is smaller than the sum of its proper divisors (794518095540).

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

403231211340 is a wasteful number, since it uses less digits than its factorization.

403231211340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 756431 (or 756429 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 403231211340 its reverse (43112132304), we get a palindrome (446343343644).

The spelling of 403231211340 in words is "four hundred three billion, two hundred thirty-one million, two hundred eleven thousand, three hundred forty".