31350305636 has 12 divisors (see below), whose sum is σ = 59083268412. Its totient is φ = 14469371808.

The previous prime is 31350305633. The next prime is 31350305663. The reversal of 31350305636 is 63650305313.

It can be written as a sum of positive squares in 2 ways, for example, as 7745056036 + 23605249600 = 88006^2 + 153640^2 .

It is a super-2 number, since 2×31350305636² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31350305596 and 31350305605.

It is not an unprimeable number, because it can be changed into a prime (31350305633) 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, 301445195 + ... + 301445298.

It is an arithmetic number, because the mean of its divisors is an integer number (4923605701).

Almost surely, 2^31350305636 is an apocalyptic number.

It is an amenable number.

31350305636 is a deficient number, since it is larger than the sum of its proper divisors (27732962776).

31350305636 is a wasteful number, since it uses less digits than its factorization.

31350305636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 602890510 (or 602890508 counting only the distinct ones).

The product of its (nonzero) digits is 72900, while the sum is 35.

The spelling of 31350305636 in words is "thirty-one billion, three hundred fifty million, three hundred five thousand, six hundred thirty-six".