1311000009998 has 32 divisors (see below), whose sum is σ = 2296326758400. Its totient is φ = 549643860864.

The previous prime is 1311000009997. The next prime is 1311000010003. The reversal of 1311000009998 is 8999000001131.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311000009997) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 932963 + ... + 1868801.

It is an arithmetic number, because the mean of its divisors is an integer number (71760211200).

Almost surely, 2^{1311000009998} is an apocalyptic number.

1311000009998 is a deficient number, since it is larger than the sum of its proper divisors (985326748402).

1311000009998 is a wasteful number, since it uses less digits than its factorization.

1311000009998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 938024.

The product of its (nonzero) digits is 17496, while the sum is 41.

The spelling of 1311000009998 in words is "one trillion, three hundred eleven billion, nine thousand, nine hundred ninety-eight".