83311011 has 20 divisors (see below), whose sum is σ = 142232112. Its totient is φ = 47605968.

The previous prime is 83311003. The next prime is 83311021. The reversal of 83311011 is 11011338.

It is a happy number.

It is not a de Polignac number, because 83311011 - 2³ = 83311003 is a prime.

It is a super-3 number, since 3×83311011³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (83311021) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 72900 + ... + 74033.

Almost surely, 2^83311011 is an apocalyptic number.

83311011 is a gapful number since it is divisible by the number (81) formed by its first and last digit.

83311011 is a deficient number, since it is larger than the sum of its proper divisors (58921101).

83311011 is a wasteful number, since it uses less digits than its factorization.

83311011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146952 (or 146943 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The square root of 83311011 is about 9127.4865653147. The cubic root of 83311011 is about 436.7512281766.

Adding to 83311011 its reverse (11011338), we get a palindrome (94322349).

The spelling of 83311011 in words is "eighty-three million, three hundred eleven thousand, eleven".