431609972 has 6 divisors (see below), whose sum is σ = 755317458. Its totient is φ = 215804984.

The previous prime is 431609933. The next prime is 431609999. The reversal of 431609972 is 279906134.

It can be written as a sum of positive squares in only one way, i.e., 371949796 + 59660176 = 19286^2 + 7724^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53951243 + ... + 53951250.

It is an arithmetic number, because the mean of its divisors is an integer number (125886243).

Almost surely, 2^431609972 is an apocalyptic number.

It is an amenable number.

431609972 is a deficient number, since it is larger than the sum of its proper divisors (323707486).

431609972 is a wasteful number, since it uses less digits than its factorization.

431609972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107902497 (or 107902495 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 41.

The square root of 431609972 is about 20775.2249566641. The cubic root of 431609972 is about 755.7250593589.

The spelling of 431609972 in words is "four hundred thirty-one million, six hundred nine thousand, nine hundred seventy-two".