431977641 has 8 divisors (see below), whose sum is σ = 577515840. Its totient is φ = 287212272.

The previous prime is 431977639. The next prime is 431977669. The reversal of 431977641 is 146779134.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 431977641 - 2¹ = 431977639 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 431977593 and 431977602.

It is not an unprimeable number, because it can be changed into a prime (431977621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 191901 + ... + 194138.

It is an arithmetic number, because the mean of its divisors is an integer number (72189480).

Almost surely, 2^431977641 is an apocalyptic number.

It is an amenable number.

431977641 is a deficient number, since it is larger than the sum of its proper divisors (145538199).

431977641 is a wasteful number, since it uses less digits than its factorization.

431977641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386415.

The product of its digits is 127008, while the sum is 42.

The square root of 431977641 is about 20784.0718099221. The cubic root of 431977641 is about 755.9395877792.

The spelling of 431977641 in words is "four hundred thirty-one million, nine hundred seventy-seven thousand, six hundred forty-one".