154134020202431 has 4 divisors (see below), whose sum is σ = 154237954135272. Its totient is φ = 154030086269592.

The previous prime is 154134020202401. The next prime is 154134020202439. The reversal of 154134020202431 is 134202020431451.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-154134020202431 is a prime.

It is a super-2 number, since 2×154134020202431² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154134020202439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51966964196 + ... + 51966967161.

It is an arithmetic number, because the mean of its divisors is an integer number (38559488533818).

Almost surely, 2^{154134020202431} is an apocalyptic number.

154134020202431 is a deficient number, since it is larger than the sum of its proper divisors (103933932841).

154134020202431 is a wasteful number, since it uses less digits than its factorization.

154134020202431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103933932840.

The product of its (nonzero) digits is 23040, while the sum is 32.

Adding to 154134020202431 its reverse (134202020431451), we get a palindrome (288336040633882).

The spelling of 154134020202431 in words is "one hundred fifty-four trillion, one hundred thirty-four billion, twenty million, two hundred two thousand, four hundred thirty-one".