83240531 has 4 divisors (see below), whose sum is σ = 90807864. Its totient is φ = 75673200.

The previous prime is 83240503. The next prime is 83240557. The reversal of 83240531 is 13504238.

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

It is a cyclic number.

It is not a de Polignac number, because 83240531 - 2⁶ = 83240467 is a prime.

It is a super-2 number, since 2×83240531² = 13857972002323922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 83240531.

It is not an unprimeable number, because it can be changed into a prime (83240231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3783650 + ... + 3783671.

It is an arithmetic number, because the mean of its divisors is an integer number (22701966).

Almost surely, 2^83240531 is an apocalyptic number.

83240531 is a deficient number, since it is larger than the sum of its proper divisors (7567333).

83240531 is a wasteful number, since it uses less digits than its factorization.

83240531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7567332.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 83240531 is about 9123.6248826878. The cubic root of 83240531 is about 436.6280315318.

Adding to 83240531 its reverse (13504238), we get a palindrome (96744769).

The spelling of 83240531 in words is "eighty-three million, two hundred forty thousand, five hundred thirty-one".