864360031 has 2 divisors, whose sum is σ = 864360032. Its totient is φ = 864360030.

The previous prime is 864360001. The next prime is 864360041. The reversal of 864360031 is 130063468.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 864360031 - 2⁹ = 864359519 is a prime.

It is a super-2 number, since 2×864360031² = 1494236526380641922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 864359975 and 864360002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (864360001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 432180015 + 432180016.

It is an arithmetic number, because the mean of its divisors is an integer number (432180016).

Almost surely, 2^864360031 is an apocalyptic number.

864360031 is a deficient number, since it is larger than the sum of its proper divisors (1).

864360031 is an equidigital number, since it uses as much as digits as its factorization.

864360031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 864360031 is about 29400.0005272109. Note that the first 3 decimals coincide. The cubic root of 864360031 is about 952.5729076214.

Subtracting from 864360031 its sum of digits (31), we obtain a square (864360000 = 29400²).

The spelling of 864360031 in words is "eight hundred sixty-four million, three hundred sixty thousand, thirty-one".