875531831 has 2 divisors, whose sum is σ = 875531832. Its totient is φ = 875531830.

The previous prime is 875531809. The next prime is 875531849. The reversal of 875531831 is 138135578.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-875531831 is a prime.

It is a super-2 number, since 2×875531831² = 1533111974188425122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (875531801) 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 as a sum of consecutive naturals, namely, 437765915 + 437765916.

It is an arithmetic number, because the mean of its divisors is an integer number (437765916).

Almost surely, 2^875531831 is an apocalyptic number.

875531831 is a deficient number, since it is larger than the sum of its proper divisors (1).

875531831 is an equidigital number, since it uses as much as digits as its factorization.

875531831 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 100800, while the sum is 41.

The square root of 875531831 is about 29589.3871345792. The cubic root of 875531831 is about 956.6593342538.

The spelling of 875531831 in words is "eight hundred seventy-five million, five hundred thirty-one thousand, eight hundred thirty-one".