20153351431 has 2 divisors, whose sum is σ = 20153351432. Its totient is φ = 20153351430.

The previous prime is 20153351399. The next prime is 20153351473. The reversal of 20153351431 is 13415335102.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20153351431 - 2⁵ = 20153351399 is a prime.

It is a super-2 number, since 2×20153351431² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20153351431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20153351831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10076675715 + 10076675716.

It is an arithmetic number, because the mean of its divisors is an integer number (10076675716).

Almost surely, 2^20153351431 is an apocalyptic number.

20153351431 is a deficient number, since it is larger than the sum of its proper divisors (1).

20153351431 is an equidigital number, since it uses as much as digits as its factorization.

20153351431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5400, while the sum is 28.

Adding to 20153351431 its reverse (13415335102), we get a palindrome (33568686533).

The spelling of 20153351431 in words is "twenty billion, one hundred fifty-three million, three hundred fifty-one thousand, four hundred thirty-one".