402431011002 has 24 divisors (see below), whose sum is σ = 880082775936. Its totient is φ = 132889990536.

The previous prime is 402431011001. The next prime is 402431011019. The reversal of 402431011002 is 200110134204.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (402431011001) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 104471338 + ... + 104475189.

It is an arithmetic number, because the mean of its divisors is an integer number (36670115664).

Almost surely, 2^402431011002 is an apocalyptic number.

402431011002 is an abundant number, since it is smaller than the sum of its proper divisors (477651764934).

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

402431011002 is a wasteful number, since it uses less digits than its factorization.

402431011002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208946642 (or 208946639 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 402431011002 its reverse (200110134204), we get a palindrome (602541145206).

The spelling of 402431011002 in words is "four hundred two billion, four hundred thirty-one million, eleven thousand, two".