431314813 has 4 divisors (see below), whose sum is σ = 431840988. Its totient is φ = 430788640.

The previous prime is 431314787. The next prime is 431314823. The reversal of 431314813 is 318413134.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 33790969 + 397523844 = 5813^2 + 19938^2 .

It is a cyclic number.

It is not a de Polignac number, because 431314813 - 2²⁵ = 397760381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431314823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 261856 + ... + 263497.

It is an arithmetic number, because the mean of its divisors is an integer number (107960247).

Almost surely, 2^431314813 is an apocalyptic number.

It is an amenable number.

431314813 is a deficient number, since it is larger than the sum of its proper divisors (526175).

431314813 is an equidigital number, since it uses as much as digits as its factorization.

431314813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526174.

The product of its digits is 3456, while the sum is 28.

The square root of 431314813 is about 20768.1201123260. The cubic root of 431314813 is about 755.5527510765.

Adding to 431314813 its reverse (318413134), we get a palindrome (749727947).

The spelling of 431314813 in words is "four hundred thirty-one million, three hundred fourteen thousand, eight hundred thirteen".