1138383131 has 16 divisors (see below), whose sum is σ = 1188009504. Its totient is φ = 1090113024.

The previous prime is 1138383109. The next prime is 1138383143. The reversal of 1138383131 is 1313838311.

It is a cyclic number.

It is not a de Polignac number, because 1138383131 - 2¹⁰ = 1138382107 is a prime.

It is a super-2 number, since 2×1138383131² = 2591832305890726322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1138383101) 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, 399845 + ... + 402681.

It is an arithmetic number, because the mean of its divisors is an integer number (74250594).

Almost surely, 2^1138383131 is an apocalyptic number.

1138383131 is a deficient number, since it is larger than the sum of its proper divisors (49626373).

1138383131 is a wasteful number, since it uses less digits than its factorization.

1138383131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3070.

The product of its digits is 5184, while the sum is 32.

The square root of 1138383131 is about 33739.9337729048. The cubic root of 1138383131 is about 1044.1498181842.

The spelling of 1138383131 in words is "one billion, one hundred thirty-eight million, three hundred eighty-three thousand, one hundred thirty-one".