20130402232143 has 48 divisors (see below), whose sum is σ = 33587168183296. Its totient is φ = 11379941475840.

The previous prime is 20130402232069. The next prime is 20130402232147. The reversal of 20130402232143 is 34123220403102.

20130402232143 is a `hidden beast` number, since 2 + 0 + 13 + 0 + 402 + 232 + 14 + 3 = 666.

It is not a de Polignac number, because 20130402232143 - 2¹³ = 20130402223951 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20130402232147) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 14637798 + ... + 15953868.

Almost surely, 2^{20130402232143} is an apocalyptic number.

20130402232143 is a deficient number, since it is larger than the sum of its proper divisors (13456765951153).

20130402232143 is a wasteful number, since it uses less digits than its factorization.

20130402232143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1318684 (or 1318681 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 20130402232143 its reverse (34123220403102), we get a palindrome (54253622635245).

The spelling of 20130402232143 in words is "twenty trillion, one hundred thirty billion, four hundred two million, two hundred thirty-two thousand, one hundred forty-three".