431666113 has 4 divisors (see below), whose sum is σ = 431707860. Its totient is φ = 431624368.

The previous prime is 431666101. The next prime is 431666117. The reversal of 431666113 is 311666134.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 406143409 + 25522704 = 20153^2 + 5052^2 .

It is a cyclic number.

It is not a de Polignac number, because 431666113 - 2⁹ = 431665601 is a prime.

It is a super-2 number, since 2×431666113² = 372671266225057538, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (431666117) 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, 7431 + ... + 30307.

It is an arithmetic number, because the mean of its divisors is an integer number (107926965).

Almost surely, 2^431666113 is an apocalyptic number.

It is an amenable number.

431666113 is a deficient number, since it is larger than the sum of its proper divisors (41747).

431666113 is a wasteful number, since it uses less digits than its factorization.

431666113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41746.

The product of its digits is 7776, while the sum is 31.

The square root of 431666113 is about 20776.5760653675. The cubic root of 431666113 is about 755.7578245280.

The spelling of 431666113 in words is "four hundred thirty-one million, six hundred sixty-six thousand, one hundred thirteen".