431321177642 has 8 divisors (see below), whose sum is σ = 646993468836. Its totient is φ = 215656688032.

The previous prime is 431321177641. The next prime is 431321177657. The reversal of 431321177642 is 246771123134.

It can be written as a sum of positive squares in 2 ways, for example, as 347579814481 + 83741363161 = 589559^2 + 289381^2 .

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

It is a super-3 number, since 3×431321177642³ (a number of 36 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 431321177642.

It is not an unprimeable number, because it can be changed into a prime (431321177641) 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, 1810163 + ... + 2034534.

Almost surely, 2^431321177642 is an apocalyptic number.

431321177642 is a deficient number, since it is larger than the sum of its proper divisors (215672291194).

431321177642 is a wasteful number, since it uses less digits than its factorization.

431321177642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3900792.

The product of its digits is 169344, while the sum is 41.

The spelling of 431321177642 in words is "four hundred thirty-one billion, three hundred twenty-one million, one hundred seventy-seven thousand, six hundred forty-two".