631670305340 has 12 divisors (see below), whose sum is σ = 1326507641256. Its totient is φ = 252668122128.

The previous prime is 631670305307. The next prime is 631670305391. The reversal of 631670305340 is 43503076136.

It is a happy number.

It is a super-3 number, since 3×631670305340³ (a number of 36 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 631670305294 and 631670305303.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15791757614 + ... + 15791757653.

It is an arithmetic number, because the mean of its divisors is an integer number (110542303438).

Almost surely, 2^631670305340 is an apocalyptic number.

It is an amenable number.

631670305340 is an abundant number, since it is smaller than the sum of its proper divisors (694837335916).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

631670305340 is a wasteful number, since it uses less digits than its factorization.

631670305340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31583515276 (or 31583515274 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 38.

The spelling of 631670305340 in words is "six hundred thirty-one billion, six hundred seventy million, three hundred five thousand, three hundred forty".