31443446329 has 3 divisors (see below), whose sum is σ = 31443623653. Its totient is φ = 31443269006.

The previous prime is 31443446327. The next prime is 31443446339. The reversal of 31443446329 is 92364434413.

The square root of 31443446329 is 177323.

It is a perfect power (a square), and thus also a powerful number.

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 is not a de Polignac number, because 31443446329 - 2¹ = 31443446327 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31443446327) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 88662 + ... + 265984.

Almost surely, 2^31443446329 is an apocalyptic number.

31443446329 is the 177323-rd square number.

31443446329 is the 88662-nd centered octagonal number.

It is an amenable number.

31443446329 is a deficient number, since it is larger than the sum of its proper divisors (177324).

31443446329 is an frugal number, since it uses more digits than its factorization.

31443446329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354646 (or 177323 counting only the distinct ones).

The product of its digits is 746496, while the sum is 43.

The spelling of 31443446329 in words is "thirty-one billion, four hundred forty-three million, four hundred forty-six thousand, three hundred twenty-nine".