154001431 has 2 divisors, whose sum is σ = 154001432. Its totient is φ = 154001430.

The previous prime is 154001429. The next prime is 154001503. The reversal of 154001431 is 134100451.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 154001431 - 2¹ = 154001429 is a prime.

It is a super-2 number, since 2×154001431² = 47432881500095522, which contains 22 as substring.

Together with 154001429, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 154001399 and 154001408.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (154071431) by changing a digit.

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 as a sum of consecutive naturals, namely, 77000715 + 77000716.

It is an arithmetic number, because the mean of its divisors is an integer number (77000716).

Almost surely, 2^154001431 is an apocalyptic number.

154001431 is a deficient number, since it is larger than the sum of its proper divisors (1).

154001431 is an equidigital number, since it uses as much as digits as its factorization.

154001431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 154001431 is about 12409.7313024900. The cubic root of 154001431 is about 536.0125013328.

Adding to 154001431 its reverse (134100451), we get a palindrome (288101882).

The spelling of 154001431 in words is "one hundred fifty-four million, one thousand, four hundred thirty-one".