231006154 has 8 divisors (see below), whose sum is σ = 346583268. Its totient is φ = 115478400.

The previous prime is 231006143. The next prime is 231006157. The reversal of 231006154 is 451600132.

It can be written as a sum of positive squares in 2 ways, for example, as 211848025 + 19158129 = 14555^2 + 4377^2 .

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

It is not an unprimeable number, because it can be changed into a prime (231006157) 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 3 ways as a sum of consecutive naturals, for example, 3354 + ... + 21754.

Almost surely, 2^231006154 is an apocalyptic number.

231006154 is a deficient number, since it is larger than the sum of its proper divisors (115577114).

231006154 is a wasteful number, since it uses less digits than its factorization.

231006154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24680.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 231006154 is about 15198.8866039589. The cubic root of 231006154 is about 613.5846926432.

Adding to 231006154 its reverse (451600132), we get a palindrome (682606286).

The spelling of 231006154 in words is "two hundred thirty-one million, six thousand, one hundred fifty-four".