20154031113 has 16 divisors (see below), whose sum is σ = 26918654400. Its totient is φ = 13412738880.

The previous prime is 20154031049. The next prime is 20154031123. The reversal of 20154031113 is 31113045102.

It is not a de Polignac number, because 20154031113 - 2⁶ = 20154031049 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20154031113.

It is not an unprimeable number, because it can be changed into a prime (20154031123) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 6582603 + ... + 6585663.

It is an arithmetic number, because the mean of its divisors is an integer number (1682415900).

Almost surely, 2^20154031113 is an apocalyptic number.

It is an amenable number.

20154031113 is a deficient number, since it is larger than the sum of its proper divisors (6764623287).

20154031113 is a wasteful number, since it uses less digits than its factorization.

20154031113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6152.

The product of its (nonzero) digits is 360, while the sum is 21.

Adding to 20154031113 its reverse (31113045102), we get a palindrome (51267076215).

The spelling of 20154031113 in words is "twenty billion, one hundred fifty-four million, thirty-one thousand, one hundred thirteen".