20403310402 has 16 divisors (see below), whose sum is σ = 30803688000. Its totient is φ = 10135564560.

The previous prime is 20403310363. The next prime is 20403310423. The reversal of 20403310402 is 20401330402.

It is a super-2 number, since 2×20403310402² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20403310402.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 237924 + ... + 312112.

It is an arithmetic number, because the mean of its divisors is an integer number (1925230500).

Almost surely, 2^20403310402 is an apocalyptic number.

20403310402 is a deficient number, since it is larger than the sum of its proper divisors (10400377598).

20403310402 is a wasteful number, since it uses less digits than its factorization.

20403310402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75081.

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 20403310402 its reverse (20401330402), we get a palindrome (40804640804).

The spelling of 20403310402 in words is "twenty billion, four hundred three million, three hundred ten thousand, four hundred two".