30985999199 has 4 divisors (see below), whose sum is σ = 32054481960. Its totient is φ = 29917516440.

The previous prime is 30985999117. The next prime is 30985999207. The reversal of 30985999199 is 99199958903.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99199958903 = 73589 ⋅1348027.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30985999199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30985996199) 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, 534241337 + ... + 534241394.

It is an arithmetic number, because the mean of its divisors is an integer number (8013620490).

Almost surely, 2^30985999199 is an apocalyptic number.

30985999199 is a deficient number, since it is larger than the sum of its proper divisors (1068482761).

30985999199 is a wasteful number, since it uses less digits than its factorization.

30985999199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1068482760.

The product of its (nonzero) digits is 63772920, while the sum is 71.

The spelling of 30985999199 in words is "thirty billion, nine hundred eighty-five million, nine hundred ninety-nine thousand, one hundred ninety-nine".