90842831 has 8 divisors (see below), whose sum is σ = 92534400. Its totient is φ = 89156440.

The previous prime is 90842827. The next prime is 90842861. The reversal of 90842831 is 13824809.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 90842831 - 2² = 90842827 is a prime.

It is a super-2 number, since 2×90842831² = 16504839888189122, 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 = 90842791 and 90842800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90842861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59366 + ... + 60876.

It is an arithmetic number, because the mean of its divisors is an integer number (11566800).

Almost surely, 2^90842831 is an apocalyptic number.

90842831 is a deficient number, since it is larger than the sum of its proper divisors (1691569).

90842831 is a wasteful number, since it uses less digits than its factorization.

90842831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2589.

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 90842831 is about 9531.1505601370. The cubic root of 90842831 is about 449.5350440363.

The spelling of 90842831 in words is "ninety million, eight hundred forty-two thousand, eight hundred thirty-one".