402531240324 has 24 divisors (see below), whose sum is σ = 951128671360. Its totient is φ = 132478635744.

The previous prime is 402531240323. The next prime is 402531240329. The reversal of 402531240324 is 423042135204.

It is a junction number, because it is equal to n+sod(n) for n = 402531240291 and 402531240300.

It is not an unprimeable number, because it can be changed into a prime (402531240323) 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, 212304559 + ... + 212306454.

Almost surely, 2^402531240324 is an apocalyptic number.

It is an amenable number.

402531240324 is an abundant number, since it is smaller than the sum of its proper divisors (548597431036).

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

402531240324 is a wasteful number, since it uses less digits than its factorization.

402531240324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424611099 (or 424611097 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 30.

Adding to 402531240324 its reverse (423042135204), we get a palindrome (825573375528).

The spelling of 402531240324 in words is "four hundred two billion, five hundred thirty-one million, two hundred forty thousand, three hundred twenty-four".