831420725386 has 8 divisors (see below), whose sum is σ = 1265744985120. Its totient is φ = 409505730348.

The previous prime is 831420725383. The next prime is 831420725389. The reversal of 831420725386 is 683527024138.

It is an interprime number because it is at equal distance from previous prime (831420725383) and next prime (831420725389).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (831420725383) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3102316006 + ... + 3102316273.

It is an arithmetic number, because the mean of its divisors is an integer number (158218123140).

Almost surely, 2^831420725386 is an apocalyptic number.

831420725386 is a deficient number, since it is larger than the sum of its proper divisors (434324259734).

831420725386 is a wasteful number, since it uses less digits than its factorization.

831420725386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6204632348.

The product of its (nonzero) digits is 1935360, while the sum is 49.

The spelling of 831420725386 in words is "eight hundred thirty-one billion, four hundred twenty million, seven hundred twenty-five thousand, three hundred eighty-six".