20154031353 has 6 divisors (see below), whose sum is σ = 29111378634. Its totient is φ = 13436020896.

The previous prime is 20154031283. The next prime is 20154031357. The reversal of 20154031353 is 35313045102.

20154031353 is a `hidden beast` number, since 201 + 5 + 403 + 1 + 3 + 53 = 666.

It can be written as a sum of positive squares in only one way, i.e., 19776234384 + 377796969 = 140628^2 + 19437^2 .

It is not a de Polignac number, because 20154031353 - 2²⁰ = 20152982777 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20154031357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1119668400 + ... + 1119668417.

It is an arithmetic number, because the mean of its divisors is an integer number (4851896439).

Almost surely, 2^20154031353 is an apocalyptic number.

It is an amenable number.

20154031353 is a deficient number, since it is larger than the sum of its proper divisors (8957347281).

20154031353 is a wasteful number, since it uses less digits than its factorization.

20154031353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2239336823 (or 2239336820 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

Adding to 20154031353 its reverse (35313045102), we get a palindrome (55467076455).

The spelling of 20154031353 in words is "twenty billion, one hundred fifty-four million, thirty-one thousand, three hundred fifty-three".