145431146 has 16 divisors (see below), whose sum is σ = 252823680. Its totient is φ = 61449360.

The previous prime is 145431131. The next prime is 145431161. The reversal of 145431146 is 641134541.

It is an interprime number because it is at equal distance from previous prime (145431131) and next prime (145431161).

It is a Curzon number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 72161 + ... + 74148.

It is an arithmetic number, because the mean of its divisors is an integer number (15801480).

Almost surely, 2^145431146 is an apocalyptic number.

145431146 is a deficient number, since it is larger than the sum of its proper divisors (107392534).

145431146 is a wasteful number, since it uses less digits than its factorization.

145431146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146389.

The product of its digits is 5760, while the sum is 29.

The square root of 145431146 is about 12059.4836539547. The cubic root of 145431146 is about 525.8789762384.

Adding to 145431146 its reverse (641134541), we get a palindrome (786565687).

The spelling of 145431146 in words is "one hundred forty-five million, four hundred thirty-one thousand, one hundred forty-six".