403231242340 has 24 divisors (see below), whose sum is σ = 846813179520. Its totient is φ = 161287245408.

The previous prime is 403231242209. The next prime is 403231242341. The reversal of 403231242340 is 43242132304.

It is a junction number, because it is equal to n+sod(n) for n = 403231242299 and 403231242308.

It is not an unprimeable number, because it can be changed into a prime (403231242341) 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, 333991 + ... + 958129.

It is an arithmetic number, because the mean of its divisors is an integer number (35283882480).

Almost surely, 2^403231242340 is an apocalyptic number.

It is an amenable number.

403231242340 is an abundant number, since it is smaller than the sum of its proper divisors (443581937180).

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

403231242340 is a wasteful number, since it uses less digits than its factorization.

403231242340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656451 (or 656449 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 403231242340 its reverse (43242132304), we get a palindrome (446473374644).

The spelling of 403231242340 in words is "four hundred three billion, two hundred thirty-one million, two hundred forty-two thousand, three hundred forty".