1310111998 has 24 divisors (see below), whose sum is σ = 2130730488. Its totient is φ = 603880992.

The previous prime is 1310111969. The next prime is 1310112007. The reversal of 1310111998 is 8991110131.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 318040 + ... + 322132.

It is an arithmetic number, because the mean of its divisors is an integer number (88780437).

Almost surely, 2^1310111998 is an apocalyptic number.

1310111998 is a deficient number, since it is larger than the sum of its proper divisors (820618490).

1310111998 is a wasteful number, since it uses less digits than its factorization.

1310111998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5068 (or 5055 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 34.

The square root of 1310111998 is about 36195.4693021102. The cubic root of 1310111998 is about 1094.2153627752.

The spelling of 1310111998 in words is "one billion, three hundred ten million, one hundred eleven thousand, nine hundred ninety-eight".