20312132154 has 32 divisors (see below), whose sum is σ = 40749832320. Its totient is φ = 6749816832.

The previous prime is 20312132149. The next prime is 20312132161. The reversal of 20312132154 is 45123121302.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 2845662 + ... + 2852790.

It is an arithmetic number, because the mean of its divisors is an integer number (1273432260).

Almost surely, 2^20312132154 is an apocalyptic number.

20312132154 is an abundant number, since it is smaller than the sum of its proper divisors (20437700166).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20312132154 is a wasteful number, since it uses less digits than its factorization.

20312132154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8534.

The product of its (nonzero) digits is 1440, while the sum is 24.

Adding to 20312132154 its reverse (45123121302), we get a palindrome (65435253456).

The spelling of 20312132154 in words is "twenty billion, three hundred twelve million, one hundred thirty-two thousand, one hundred fifty-four".