20323235151 has 32 divisors (see below), whose sum is σ = 30699241920. Its totient is φ = 13283367552.

The previous prime is 20323235131. The next prime is 20323235201. The reversal of 20323235151 is 15153232302.

It is a happy number.

It is not a de Polignac number, because 20323235151 - 2⁶ = 20323235087 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20323235131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2280861 + ... + 2289753.

It is an arithmetic number, because the mean of its divisors is an integer number (959351310).

Almost surely, 2^20323235151 is an apocalyptic number.

20323235151 is a deficient number, since it is larger than the sum of its proper divisors (10376006769).

20323235151 is a wasteful number, since it uses less digits than its factorization.

20323235151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10552 (or 10546 counting only the distinct ones).

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

Adding to 20323235151 its reverse (15153232302), we get a palindrome (35476467453).

The spelling of 20323235151 in words is "twenty billion, three hundred twenty-three million, two hundred thirty-five thousand, one hundred fifty-one".