31434936 has 64 divisors (see below), whose sum is σ = 86274720. Its totient is φ = 9484800.

The previous prime is 31434929. The next prime is 31434973. The reversal of 31434936 is 63943413.

It is a junction number, because it is equal to n+sod(n) for n = 31434897 and 31434906.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15586 + ... + 17486.

Almost surely, 2^31434936 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31434936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43137360).

31434936 is an abundant number, since it is smaller than the sum of its proper divisors (54839784).

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

31434936 is a wasteful number, since it uses less digits than its factorization.

31434936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1976 (or 1972 counting only the distinct ones).

The product of its digits is 23328, while the sum is 33.

The square root of 31434936 is about 5606.6867221203. The cubic root of 31434936 is about 315.6003868138.

The spelling of 31434936 in words is "thirty-one million, four hundred thirty-four thousand, nine hundred thirty-six".