83131738 has 4 divisors (see below), whose sum is σ = 124697610. Its totient is φ = 41565868.

The previous prime is 83131703. The next prime is 83131747. The reversal of 83131738 is 83713138.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 83713138 = 2 ⋅41856569.

It can be written as a sum of positive squares in only one way, i.e., 68178049 + 14953689 = 8257^2 + 3867^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20782933 + ... + 20782936.

Almost surely, 2^83131738 is an apocalyptic number.

83131738 is a deficient number, since it is larger than the sum of its proper divisors (41565872).

83131738 is a wasteful number, since it uses less digits than its factorization.

83131738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41565871.

The product of its digits is 12096, while the sum is 34.

The square root of 83131738 is about 9117.6607745627. The cubic root of 83131738 is about 436.4377284726.

The spelling of 83131738 in words is "eighty-three million, one hundred thirty-one thousand, seven hundred thirty-eight".