83402031 has 4 divisors (see below), whose sum is σ = 111202712. Its totient is φ = 55601352.

The previous prime is 83402021. The next prime is 83402101. The reversal of 83402031 is 13020438.

It is a happy number.

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

It is not a de Polignac number, because 83402031 - 2²² = 79207727 is a prime.

It is a super-2 number, since 2×83402031² = 13911797549849922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 83401989 and 83402007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83402021) 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, 13900336 + ... + 13900341.

It is an arithmetic number, because the mean of its divisors is an integer number (27800678).

Almost surely, 2^83402031 is an apocalyptic number.

83402031 is a deficient number, since it is larger than the sum of its proper divisors (27800681).

83402031 is a wasteful number, since it uses less digits than its factorization.

83402031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27800680.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 83402031 is about 9132.4712427688. The cubic root of 83402031 is about 436.9102252804.

Adding to 83402031 its reverse (13020438), we get a palindrome (96422469).

The spelling of 83402031 in words is "eighty-three million, four hundred two thousand, thirty-one".