431020145 has 16 divisors (see below), whose sum is σ = 521914320. Its totient is φ = 341704704.

The previous prime is 431020123. The next prime is 431020181. The reversal of 431020145 is 541020134.

It can be written as a sum of positive squares in 8 ways, for example, as 228584161 + 202435984 = 15119^2 + 14228^2 .

It is a cyclic number.

It is not a de Polignac number, because 431020145 - 2⁸ = 431019889 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 305201 + ... + 306609.

It is an arithmetic number, because the mean of its divisors is an integer number (32619645).

Almost surely, 2^431020145 is an apocalyptic number.

It is an amenable number.

431020145 is a deficient number, since it is larger than the sum of its proper divisors (90894175).

431020145 is a wasteful number, since it uses less digits than its factorization.

431020145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1924.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 431020145 is about 20761.0246616105. The cubic root of 431020145 is about 755.3806509991.

Adding to 431020145 its reverse (541020134), we get a palindrome (972040279).

The spelling of 431020145 in words is "four hundred thirty-one million, twenty thousand, one hundred forty-five".