402343312012 has 24 divisors (see below), whose sum is σ = 711525604496. Its totient is φ = 199051250688.

The previous prime is 402343312001. The next prime is 402343312013. The reversal of 402343312012 is 210213343204.

It is not an unprimeable number, because it can be changed into a prime (402343312013) 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, 1574008 + ... + 1811680.

Almost surely, 2^402343312012 is an apocalyptic number.

It is an amenable number.

402343312012 is a deficient number, since it is larger than the sum of its proper divisors (309182292484).

402343312012 is a wasteful number, since it uses less digits than its factorization.

402343312012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242137 (or 242135 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 402343312012 its reverse (210213343204), we get a palindrome (612556655216).

The spelling of 402343312012 in words is "four hundred two billion, three hundred forty-three million, three hundred twelve thousand, twelve".