431401145 has 24 divisors (see below), whose sum is σ = 603675144. Its totient is φ = 295094016.

The previous prime is 431401123. The next prime is 431401169. The reversal of 431401145 is 541104134.

It can be written as a sum of positive squares in 4 ways, for example, as 252269689 + 179131456 = 15883^2 + 13384^2 .

It is not a de Polignac number, because 431401145 - 2¹⁶ = 431335609 is a prime.

It is a super-2 number, since 2×431401145² = 372213895814622050, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 431401145.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 110039 + ... + 113891.

It is an arithmetic number, because the mean of its divisors is an integer number (25153131).

Almost surely, 2^431401145 is an apocalyptic number.

It is an amenable number.

431401145 is a deficient number, since it is larger than the sum of its proper divisors (172273999).

431401145 is a wasteful number, since it uses less digits than its factorization.

431401145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4329 (or 4322 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 431401145 is about 20770.1984824411. The cubic root of 431401145 is about 755.6031582088.

Adding to 431401145 its reverse (541104134), we get a palindrome (972505279).

The spelling of 431401145 in words is "four hundred thirty-one million, four hundred one thousand, one hundred forty-five".