1083131388 has 18 divisors (see below), whose sum is σ = 2737915544. Its totient is φ = 361043784.

The previous prime is 1083131363. The next prime is 1083131393. The reversal of 1083131388 is 8831313801.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 30086983 = 1083131388 / (1 + 0 + 8 + 3 + 1 + 3 + 1 + 3 + 8 + 8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15043456 + ... + 15043527.

Almost surely, 2^1083131388 is an apocalyptic number.

1083131388 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1083131388 is an abundant number, since it is smaller than the sum of its proper divisors (1654784156).

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

1083131388 is a wasteful number, since it uses less digits than its factorization.

1083131388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30086993 (or 30086988 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 1083131388 is about 32910.9615174033. The cubic root of 1083131388 is about 1026.9762034467.

The spelling of 1083131388 in words is "one billion, eighty-three million, one hundred thirty-one thousand, three hundred eighty-eight".