991203014 has 4 divisors (see below), whose sum is σ = 1486804524. Its totient is φ = 495601506.

The previous prime is 991203011. The next prime is 991203029. The reversal of 991203014 is 410302199.

It is a happy number.

991203014 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 410302199 = 349 ⋅1175651.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (991203011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247800752 + ... + 247800755.

It is an arithmetic number, because the mean of its divisors is an integer number (371701131).

Almost surely, 2^991203014 is an apocalyptic number.

991203014 is a deficient number, since it is larger than the sum of its proper divisors (495601510).

991203014 is a wasteful number, since it uses less digits than its factorization.

991203014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495601509.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 991203014 is about 31483.3767883942. The cubic root of 991203014 is about 997.0590305109.

The spelling of 991203014 in words is "nine hundred ninety-one million, two hundred three thousand, fourteen".