20453003431 has 16 divisors (see below), whose sum is σ = 23573687040. Its totient is φ = 17382597120.

The previous prime is 20453003419. The next prime is 20453003443. The reversal of 20453003431 is 13430035402.

It is an interprime number because it is at equal distance from previous prime (20453003419) and next prime (20453003443).

It is not a de Polignac number, because 20453003431 - 2¹⁹ = 20452479143 is a prime.

It is a super-2 number, since 2×20453003431² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20453003396 and 20453003405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20453003491) 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, 411271 + ... + 458311.

It is an arithmetic number, because the mean of its divisors is an integer number (1473355440).

Almost surely, 2^20453003431 is an apocalyptic number.

20453003431 is a deficient number, since it is larger than the sum of its proper divisors (3120683609).

20453003431 is a wasteful number, since it uses less digits than its factorization.

20453003431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47574.

The product of its (nonzero) digits is 4320, while the sum is 25.

Adding to 20453003431 its reverse (13430035402), we get a palindrome (33883038833).

The spelling of 20453003431 in words is "twenty billion, four hundred fifty-three million, three thousand, four hundred thirty-one".