867920031 has 48 divisors (see below), whose sum is σ = 1402128000. Its totient is φ = 512896320.

The previous prime is 867919919. The next prime is 867920059. The reversal of 867920031 is 130029768.

It is not a de Polignac number, because 867920031 - 2⁷ = 867919903 is a prime.

It is a super-2 number, since 2×867920031² = 1506570360422081922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (867920231) 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 47 ways as a sum of consecutive naturals, for example, 811365 + ... + 812433.

It is an arithmetic number, because the mean of its divisors is an integer number (29211000).

Almost surely, 2^867920031 is an apocalyptic number.

867920031 is a deficient number, since it is larger than the sum of its proper divisors (534207969).

867920031 is a wasteful number, since it uses less digits than its factorization.

867920031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1284 (or 1281 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 867920031 is about 29460.4825316898. The cubic root of 867920031 is about 953.8788890729.

Adding to 867920031 its reverse (130029768), we get a palindrome (997949799).

The spelling of 867920031 in words is "eight hundred sixty-seven million, nine hundred twenty thousand, thirty-one".