30631342889 has 4 divisors (see below), whose sum is σ = 35007249024. Its totient is φ = 26255436756.

The previous prime is 30631342811. The next prime is 30631342897. The reversal of 30631342889 is 98824313603.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 98824313603 = 151 ⋅654465653.

It is a cyclic number.

It is not a de Polignac number, because 30631342889 - 2²⁴ = 30614565673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30631342789) 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, 2187953057 + ... + 2187953070.

It is an arithmetic number, because the mean of its divisors is an integer number (8751812256).

Almost surely, 2^30631342889 is an apocalyptic number.

It is an amenable number.

30631342889 is a deficient number, since it is larger than the sum of its proper divisors (4375906135).

30631342889 is an equidigital number, since it uses as much as digits as its factorization.

30631342889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4375906134.

The product of its (nonzero) digits is 746496, while the sum is 47.

The spelling of 30631342889 in words is "thirty billion, six hundred thirty-one million, three hundred forty-two thousand, eight hundred eighty-nine".