2154643131 has 8 divisors (see below), whose sum is σ = 2971921680. Its totient is φ = 1386896672.

The previous prime is 2154643109. The next prime is 2154643147. The reversal of 2154643131 is 1313464512.

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

It is a cyclic number.

It is not a de Polignac number, because 2154643131 - 2²⁵ = 2121088699 is a prime.

It is a super-2 number, since 2×2154643131² = 9284974043930966322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2154643181) 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, 12382920 + ... + 12383093.

It is an arithmetic number, because the mean of its divisors is an integer number (371490210).

Almost surely, 2^2154643131 is an apocalyptic number.

2154643131 is a deficient number, since it is larger than the sum of its proper divisors (817278549).

2154643131 is a wasteful number, since it uses less digits than its factorization.

2154643131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24766045.

The product of its digits is 8640, while the sum is 30.

The square root of 2154643131 is about 46418.1336440835. The cubic root of 2154643131 is about 1291.5913160308.

The spelling of 2154643131 in words is "two billion, one hundred fifty-four million, six hundred forty-three thousand, one hundred thirty-one".