146945431 has 2 divisors, whose sum is σ = 146945432. Its totient is φ = 146945430.

The previous prime is 146945417. The next prime is 146945437. The reversal of 146945431 is 134549641.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 146945431 - 2⁷ = 146945303 is a prime.

It is a super-2 number, since 2×146945431² = 43185919383551522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (146945437) 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, 73472715 + 73472716.

It is an arithmetic number, because the mean of its divisors is an integer number (73472716).

Almost surely, 2^146945431 is an apocalyptic number.

146945431 is a deficient number, since it is larger than the sum of its proper divisors (1).

146945431 is an equidigital number, since it uses as much as digits as its factorization.

146945431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51840, while the sum is 37.

The square root of 146945431 is about 12122.1050564661. The cubic root of 146945431 is about 527.6978956954.

The spelling of 146945431 in words is "one hundred forty-six million, nine hundred forty-five thousand, four hundred thirty-one".