2154532431 has 8 divisors (see below), whose sum is σ = 2877606144. Its totient is φ = 1433906840.

The previous prime is 2154532423. The next prime is 2154532433. The reversal of 2154532431 is 1342354512.

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 2154532431 - 2³ = 2154532423 is a prime.

It is a super-2 number, since 2×2154532431² = 9284019992461539522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2154532433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 609975 + ... + 613496.

It is an arithmetic number, because the mean of its divisors is an integer number (359700768).

Almost surely, 2^2154532431 is an apocalyptic number.

2154532431 is a deficient number, since it is larger than the sum of its proper divisors (723073713).

2154532431 is a wasteful number, since it uses less digits than its factorization.

2154532431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1224061.

The product of its digits is 14400, while the sum is 30.

The square root of 2154532431 is about 46416.9412068482. The cubic root of 2154532431 is about 1291.5691961099.

Adding to 2154532431 its reverse (1342354512), we get a palindrome (3496886943).

The spelling of 2154532431 in words is "two billion, one hundred fifty-four million, five hundred thirty-two thousand, four hundred thirty-one".