83131355 has 4 divisors (see below), whose sum is σ = 99757632. Its totient is φ = 66505080.

The previous prime is 83131339. The next prime is 83131369. The reversal of 83131355 is 55313138.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 83131355 - 2⁴ = 83131339 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8313131 + ... + 8313140.

It is an arithmetic number, because the mean of its divisors is an integer number (24939408).

Almost surely, 2^83131355 is an apocalyptic number.

83131355 is a deficient number, since it is larger than the sum of its proper divisors (16626277).

83131355 is a wasteful number, since it uses less digits than its factorization.

83131355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16626276.

The product of its digits is 5400, while the sum is 29.

The square root of 83131355 is about 9117.6397713443. The cubic root of 83131355 is about 436.4370582276.

The spelling of 83131355 in words is "eighty-three million, one hundred thirty-one thousand, three hundred fifty-five".