872143631 has 2 divisors, whose sum is σ = 872143632. Its totient is φ = 872143630.

The previous prime is 872143607. The next prime is 872143661. The reversal of 872143631 is 136341278.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 872143631 - 2¹⁸ = 871881487 is a prime.

It is a super-2 number, since 2×872143631² = 1521269026187728322, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 872143591 and 872143600.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (872143661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 436071815 + 436071816.

It is an arithmetic number, because the mean of its divisors is an integer number (436071816).

Almost surely, 2^872143631 is an apocalyptic number.

872143631 is a deficient number, since it is larger than the sum of its proper divisors (1).

872143631 is an equidigital number, since it uses as much as digits as its factorization.

872143631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24192, while the sum is 35.

The square root of 872143631 is about 29532.0780000324. The cubic root of 872143631 is about 955.4236878097.

The spelling of 872143631 in words is "eight hundred seventy-two million, one hundred forty-three thousand, six hundred thirty-one".