862617920231 has 2 divisors, whose sum is σ = 862617920232. Its totient is φ = 862617920230.

The previous prime is 862617920161. The next prime is 862617920243. The reversal of 862617920231 is 132029716268.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-862617920231 is a prime.

It is a super-2 number, since 2×862617920231² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (862617926231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 431308960115 + 431308960116.

It is an arithmetic number, because the mean of its divisors is an integer number (431308960116).

Almost surely, 2^862617920231 is an apocalyptic number.

862617920231 is a deficient number, since it is larger than the sum of its proper divisors (1).

862617920231 is an equidigital number, since it uses as much as digits as its factorization.

862617920231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 435456, while the sum is 47.

The spelling of 862617920231 in words is "eight hundred sixty-two billion, six hundred seventeen million, nine hundred twenty thousand, two hundred thirty-one".