145304431 has 8 divisors (see below), whose sum is σ = 146710400. Its totient is φ = 143904600.

The previous prime is 145304407. The next prime is 145304449. The reversal of 145304431 is 134403541.

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

It is a cyclic number.

It is not a de Polignac number, because 145304431 - 2⁵ = 145304399 is a prime.

It is a super-2 number, since 2×145304431² = 42226755336467522, 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 = 145304396 and 145304405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145305431) 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, 55960 + ... + 58498.

It is an arithmetic number, because the mean of its divisors is an integer number (18338800).

Almost surely, 2^145304431 is an apocalyptic number.

145304431 is a deficient number, since it is larger than the sum of its proper divisors (1405969).

145304431 is a wasteful number, since it uses less digits than its factorization.

145304431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3069.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 145304431 is about 12054.2287600659. The cubic root of 145304431 is about 525.7261980581.

Adding to 145304431 its reverse (134403541), we get a palindrome (279707972).

The spelling of 145304431 in words is "one hundred forty-five million, three hundred four thousand, four hundred thirty-one".