146431019 has 8 divisors (see below), whose sum is σ = 167425248. Its totient is φ = 125455680.

The previous prime is 146431001. The next prime is 146431031. The reversal of 146431019 is 910134641.

146431019 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-146431019 is a prime.

It is a super-2 number, since 2×146431019² = 42884086650756722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 146430982 and 146431000.

It is not an unprimeable number, because it can be changed into a prime (146431069) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21959 + ... + 27839.

It is an arithmetic number, because the mean of its divisors is an integer number (20928156).

Almost surely, 2^146431019 is an apocalyptic number.

146431019 is a deficient number, since it is larger than the sum of its proper divisors (20994229).

146431019 is an equidigital number, since it uses as much as digits as its factorization.

146431019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9445.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 146431019 is about 12100.8685225483. The cubic root of 146431019 is about 527.0814049218.

The spelling of 146431019 in words is "one hundred forty-six million, four hundred thirty-one thousand, nineteen".