20154264231 has 8 divisors (see below), whose sum is σ = 28286686720. Its totient is φ = 12729008952.

The previous prime is 20154264187. The next prime is 20154264233. The reversal of 20154264231 is 13246245102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20154264231 - 2⁷ = 20154264103 is a prime.

It is a super-2 number, since 2×20154264231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20154264233) 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 7 ways as a sum of consecutive naturals, for example, 176791735 + ... + 176791848.

It is an arithmetic number, because the mean of its divisors is an integer number (3535835840).

Almost surely, 2^20154264231 is an apocalyptic number.

20154264231 is a deficient number, since it is larger than the sum of its proper divisors (8132422489).

20154264231 is a wasteful number, since it uses less digits than its factorization.

20154264231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353583605.

The product of its (nonzero) digits is 11520, while the sum is 30.

The spelling of 20154264231 in words is "twenty billion, one hundred fifty-four million, two hundred sixty-four thousand, two hundred thirty-one".