858412031 has 4 divisors (see below), whose sum is σ = 868057200. Its totient is φ = 848766864.

The previous prime is 858412021. The next prime is 858412033. The reversal of 858412031 is 130214858.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-858412031 is a prime.

It is a super-2 number, since 2×858412031² = 1473742429931089922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (858412033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4822451 + ... + 4822628.

It is an arithmetic number, because the mean of its divisors is an integer number (217014300).

Almost surely, 2^858412031 is an apocalyptic number.

858412031 is a deficient number, since it is larger than the sum of its proper divisors (9645169).

858412031 is an equidigital number, since it uses as much as digits as its factorization.

858412031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9645168.

The product of its (nonzero) digits is 7680, while the sum is 32.

The square root of 858412031 is about 29298.6694407784. The cubic root of 858412031 is about 950.3828672834.

Adding to 858412031 its reverse (130214858), we get a palindrome (988626889).

The spelling of 858412031 in words is "eight hundred fifty-eight million, four hundred twelve thousand, thirty-one".