321023431402 has 8 divisors (see below), whose sum is σ = 481563360000. Its totient is φ = 160502311404.

The previous prime is 321023431397. The next prime is 321023431427. The reversal of 321023431402 is 204134320123.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×321023431402² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4659402 + ... + 4727797.

It is an arithmetic number, because the mean of its divisors is an integer number (60195420000).

Almost surely, 2^321023431402 is an apocalyptic number.

321023431402 is a deficient number, since it is larger than the sum of its proper divisors (160539928598).

321023431402 is a wasteful number, since it uses less digits than its factorization.

321023431402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9404300.

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

Adding to 321023431402 its reverse (204134320123), we get a palindrome (525157751525).

The spelling of 321023431402 in words is "three hundred twenty-one billion, twenty-three million, four hundred thirty-one thousand, four hundred two".