1311735128 has 16 divisors (see below), whose sum is σ = 2683094760. Its totient is φ = 596243200.

The previous prime is 1311735127. The next prime is 1311735169. The reversal of 1311735128 is 8215371131.

It is a junction number, because it is equal to n+sod(n) for n = 1311735094 and 1311735103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311735127) 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, 7452953 + ... + 7453128.

Almost surely, 2^1311735128 is an apocalyptic number.

It is an amenable number.

1311735128 is an abundant number, since it is smaller than the sum of its proper divisors (1371359632).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1311735128 is a wasteful number, since it uses less digits than its factorization.

1311735128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14906098 (or 14906094 counting only the distinct ones).

The product of its digits is 5040, while the sum is 32.

The square root of 1311735128 is about 36217.8840905981. The cubic root of 1311735128 is about 1094.6670597353.

The spelling of 1311735128 in words is "one billion, three hundred eleven million, seven hundred thirty-five thousand, one hundred twenty-eight".