31009336436 has 12 divisors (see below), whose sum is σ = 58440672612. Its totient is φ = 14312001408.

The previous prime is 31009336417. The next prime is 31009336447. The reversal of 31009336436 is 63463390013.

It can be written as a sum of positive squares in 2 ways, for example, as 9573448336 + 21435888100 = 97844^2 + 146410^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 31009336436.

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, 298166645 + ... + 298166748.

It is an arithmetic number, because the mean of its divisors is an integer number (4870056051).

Almost surely, 2^31009336436 is an apocalyptic number.

It is an amenable number.

31009336436 is a deficient number, since it is larger than the sum of its proper divisors (27431336176).

31009336436 is a wasteful number, since it uses less digits than its factorization.

31009336436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 596333410 (or 596333408 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 38.

The spelling of 31009336436 in words is "thirty-one billion, nine million, three hundred thirty-six thousand, four hundred thirty-six".