1310439998 has 32 divisors (see below), whose sum is σ = 2329067520. Its totient is φ = 541126080.

The previous prime is 1310439997. The next prime is 1310440031. The reversal of 1310439998 is 8999340131.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1310439997) 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, 94643 + ... + 107601.

It is an arithmetic number, because the mean of its divisors is an integer number (72783360).

Almost surely, 2^1310439998 is an apocalyptic number.

1310439998 is a deficient number, since it is larger than the sum of its proper divisors (1018627522).

1310439998 is a wasteful number, since it uses less digits than its factorization.

1310439998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13232.

The product of its (nonzero) digits is 209952, while the sum is 47.

The square root of 1310439998 is about 36199.9999723757. Note that the first 4 decimals coincide. The cubic root of 1310439998 is about 1094.3066711753.

The spelling of 1310439998 in words is "one billion, three hundred ten million, four hundred thirty-nine thousand, nine hundred ninety-eight".