145414431 has 12 divisors (see below), whose sum is σ = 212702880. Its totient is φ = 95715360.

The previous prime is 145414421. The next prime is 145414453. The reversal of 145414431 is 134414541.

It is not a de Polignac number, because 145414431 - 2¹⁰ = 145413407 is a prime.

It is a super-2 number, since 2×145414431² = 42290713486107522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 145414395 and 145414404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145414421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 101550 + ... + 102971.

It is an arithmetic number, because the mean of its divisors is an integer number (17725240).

Almost surely, 2^145414431 is an apocalyptic number.

145414431 is a deficient number, since it is larger than the sum of its proper divisors (67288449).

145414431 is a wasteful number, since it uses less digits than its factorization.

145414431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204606 (or 204603 counting only the distinct ones).

The product of its digits is 3840, while the sum is 27.

The square root of 145414431 is about 12058.7906110024. The cubic root of 145414431 is about 525.8588283216.

Adding to 145414431 its reverse (134414541), we get a palindrome (279828972).

The spelling of 145414431 in words is "one hundred forty-five million, four hundred fourteen thousand, four hundred thirty-one".