31343836 has 6 divisors (see below), whose sum is σ = 54851720. Its totient is φ = 15671916.

The previous prime is 31343833. The next prime is 31343843. The reversal of 31343836 is 63834313.

It is a junction number, because it is equal to n+sod(n) for n = 31343798 and 31343807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31343833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3917976 + ... + 3917983.

Almost surely, 2^31343836 is an apocalyptic number.

It is an amenable number.

31343836 is a deficient number, since it is larger than the sum of its proper divisors (23507884).

31343836 is a wasteful number, since it uses less digits than its factorization.

31343836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7835963 (or 7835961 counting only the distinct ones).

The product of its digits is 15552, while the sum is 31.

The square root of 31343836 is about 5598.5565996960. The cubic root of 31343836 is about 315.2952166450.

The spelling of 31343836 in words is "thirty-one million, three hundred forty-three thousand, eight hundred thirty-six".