83507031 has 10 divisors (see below), whose sum is σ = 124745192. Its totient is φ = 55671300.

The previous prime is 83507003. The next prime is 83507041. The reversal of 83507031 is 13070538.

It is not a de Polignac number, because 83507031 - 2⁹ = 83506519 is a prime.

It is a super-2 number, since 2×83507031² = 13946848452869922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 83506986 and 83507004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83507041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 515395 + ... + 515556.

Almost surely, 2^83507031 is an apocalyptic number.

83507031 is a gapful number since it is divisible by the number (81) formed by its first and last digit.

83507031 is a deficient number, since it is larger than the sum of its proper divisors (41238161).

83507031 is a wasteful number, since it uses less digits than its factorization.

83507031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1030963 (or 1030954 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 83507031 is about 9138.2181523533. The cubic root of 83507031 is about 437.0934995352.

Adding to 83507031 its reverse (13070538), we get a palindrome (96577569).

The spelling of 83507031 in words is "eighty-three million, five hundred seven thousand, thirty-one".