31443750089 has 4 divisors (see below), whose sum is σ = 32458064640. Its totient is φ = 30429435540.

The previous prime is 31443750067. The next prime is 31443750127. The reversal of 31443750089 is 98005734413.

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 a cyclic number.

It is not a de Polignac number, because 31443750089 - 2¹⁶ = 31443684553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31443750889) 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, 507157229 + ... + 507157290.

It is an arithmetic number, because the mean of its divisors is an integer number (8114516160).

Almost surely, 2^31443750089 is an apocalyptic number.

It is an amenable number.

31443750089 is a deficient number, since it is larger than the sum of its proper divisors (1014314551).

31443750089 is a wasteful number, since it uses less digits than its factorization.

31443750089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1014314550.

The product of its (nonzero) digits is 362880, while the sum is 44.

The spelling of 31443750089 in words is "thirty-one billion, four hundred forty-three million, seven hundred fifty thousand, eighty-nine".