154043454331 has 4 divisors (see below), whose sum is σ = 165892950832. Its totient is φ = 142193957832.

The previous prime is 154043454283. The next prime is 154043454371. The reversal of 154043454331 is 133454340451.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 133454340451 = 911 ⋅146492141.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-154043454331 is a prime.

It is a super-2 number, since 2×154043454331² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (154043454371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5924748231 + ... + 5924748256.

It is an arithmetic number, because the mean of its divisors is an integer number (41473237708).

Almost surely, 2^154043454331 is an apocalyptic number.

154043454331 is a deficient number, since it is larger than the sum of its proper divisors (11849496501).

154043454331 is a wasteful number, since it uses less digits than its factorization.

154043454331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11849496500.

The product of its (nonzero) digits is 172800, while the sum is 37.

Adding to 154043454331 its reverse (133454340451), we get a palindrome (287497794782).

The spelling of 154043454331 in words is "one hundred fifty-four billion, forty-three million, four hundred fifty-four thousand, three hundred thirty-one".