31469897289 has 4 divisors (see below), whose sum is σ = 41959863056. Its totient is φ = 20979931524.

The previous prime is 31469897243. The next prime is 31469897323. The reversal of 31469897289 is 98279896413.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 31469897289 - 2¹² = 31469893193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31469897189) 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, 5244982879 + ... + 5244982884.

It is an arithmetic number, because the mean of its divisors is an integer number (10489965764).

Almost surely, 2^31469897289 is an apocalyptic number.

It is an amenable number.

31469897289 is a deficient number, since it is larger than the sum of its proper divisors (10489965767).

31469897289 is a wasteful number, since it uses less digits than its factorization.

31469897289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10489965766.

The product of its digits is 47029248, while the sum is 66.

The spelling of 31469897289 in words is "thirty-one billion, four hundred sixty-nine million, eight hundred ninety-seven thousand, two hundred eighty-nine".