146444231 has 4 divisors (see below), whose sum is σ = 146499000. Its totient is φ = 146389464.

The previous prime is 146444227. The next prime is 146444257. The reversal of 146444231 is 132444641.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132444641 = 7 ⋅18920663.

It is a cyclic number.

It is not a de Polignac number, because 146444231 - 2² = 146444227 is a prime.

It is a super-2 number, since 2×146444231² = 42891825586362722, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 146444194 and 146444203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (146444201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23156 + ... + 28793.

It is an arithmetic number, because the mean of its divisors is an integer number (36624750).

Almost surely, 2^146444231 is an apocalyptic number.

146444231 is a deficient number, since it is larger than the sum of its proper divisors (54769).

146444231 is an equidigital number, since it uses as much as digits as its factorization.

146444231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54768.

The product of its digits is 9216, while the sum is 29.

The square root of 146444231 is about 12101.4144214633. The cubic root of 146444231 is about 527.0972567318.

Adding to 146444231 its reverse (132444641), we get a palindrome (278888872).

The spelling of 146444231 in words is "one hundred forty-six million, four hundred forty-four thousand, two hundred thirty-one".