231545154 has 16 divisors (see below), whose sum is σ = 463243392. Its totient is φ = 77156208.

The previous prime is 231545147. The next prime is 231545189. The reversal of 231545154 is 451545132.

It is a super-2 number, since 2×231545154² = 107226316681767432, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25687 + ... + 33509.

It is an arithmetic number, because the mean of its divisors is an integer number (28952712).

Almost surely, 2^231545154 is an apocalyptic number.

231545154 is an abundant number, since it is smaller than the sum of its proper divisors (231698238).

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

231545154 is a wasteful number, since it uses less digits than its factorization.

231545154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12761.

The product of its digits is 12000, while the sum is 30.

The square root of 231545154 is about 15216.6078348625. The cubic root of 231545154 is about 614.0615417877.

The spelling of 231545154 in words is "two hundred thirty-one million, five hundred forty-five thousand, one hundred fifty-four".