20403432113 has 8 divisors (see below), whose sum is σ = 21624445440. Its totient is φ = 19184731200.

The previous prime is 20403432083. The next prime is 20403432121. The reversal of 20403432113 is 31123430402.

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

It is not a de Polignac number, because 20403432113 - 2¹⁰ = 20403431089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20403432143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 559913 + ... + 595238.

It is an arithmetic number, because the mean of its divisors is an integer number (2703055680).

Almost surely, 2^20403432113 is an apocalyptic number.

It is an amenable number.

20403432113 is a deficient number, since it is larger than the sum of its proper divisors (1221013327).

20403432113 is a wasteful number, since it uses less digits than its factorization.

20403432113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1156207.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 20403432113 its reverse (31123430402), we get a palindrome (51526862515).

The spelling of 20403432113 in words is "twenty billion, four hundred three million, four hundred thirty-two thousand, one hundred thirteen".