154145431 has 8 divisors (see below), whose sum is σ = 168372864. Its totient is φ = 139953720.

The previous prime is 154145429. The next prime is 154145437. The reversal of 154145431 is 134541451.

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 154145431 - 2¹ = 154145429 is a prime.

It is a super-2 number, since 2×154145431² = 47521627796351522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 154145431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154145437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 540 + ... + 17566.

It is an arithmetic number, because the mean of its divisors is an integer number (21046608).

Almost surely, 2^154145431 is an apocalyptic number.

154145431 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

154145431 is a deficient number, since it is larger than the sum of its proper divisors (14227433).

154145431 is a wasteful number, since it uses less digits than its factorization.

154145431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17861.

The product of its digits is 4800, while the sum is 28.

The square root of 154145431 is about 12415.5318452332. The cubic root of 154145431 is about 536.1795165665.

Adding to 154145431 its reverse (134541451), we get a palindrome (288686882).

The spelling of 154145431 in words is "one hundred fifty-four million, one hundred forty-five thousand, four hundred thirty-one".