20403012302430 has 64 divisors (see below), whose sum is σ = 51184795511808. Its totient is φ = 5195227023360.

The previous prime is 20403012302423. The next prime is 20403012302467. The reversal of 20403012302430 is 3420321030402.

It is a super-2 number, since 2×20403012302430² (a number of 27 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 20403012302430.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25225426 + ... + 26021685.

It is an arithmetic number, because the mean of its divisors is an integer number (799762429872).

Almost surely, 2^{20403012302430} is an apocalyptic number.

20403012302430 is an abundant number, since it is smaller than the sum of its proper divisors (30781783209378).

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

20403012302430 is a wasteful number, since it uses less digits than its factorization.

20403012302430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51247721.

The product of its (nonzero) digits is 3456, while the sum is 24.

Adding to 20403012302430 its reverse (3420321030402), we get a palindrome (23823333332832).

The spelling of 20403012302430 in words is "twenty trillion, four hundred three billion, twelve million, three hundred two thousand, four hundred thirty".