431303401 has 4 divisors (see below), whose sum is σ = 454003600. Its totient is φ = 408603204.

The previous prime is 431303381. The next prime is 431303407. The reversal of 431303401 is 104303134.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 431303401 - 2⁷ = 431303273 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 22700179 = 431303401 / (4 + 3 + 1 + 3 + 0 + 3 + 4 + 0 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (431303407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11350071 + ... + 11350108.

It is an arithmetic number, because the mean of its divisors is an integer number (113500900).

Almost surely, 2^431303401 is an apocalyptic number.

It is an amenable number.

431303401 is a deficient number, since it is larger than the sum of its proper divisors (22700199).

431303401 is a wasteful number, since it uses less digits than its factorization.

431303401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22700198.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 431303401 is about 20767.8453624828. The cubic root of 431303401 is about 755.5460873870.

Adding to 431303401 its reverse (104303134), we get a palindrome (535606535).

The spelling of 431303401 in words is "four hundred thirty-one million, three hundred three thousand, four hundred one".